SEO Glossary
1433 terms from the original searchengineoptimising.com glossary, covering SEO, internet, networking, and web development. Definitions are preserved from the original site — some are period pieces from the 2000s internet, others are still current.
.
3
4
A
- About
- Above the fold
- Absolute link
- Acquisition
- Acquisition cost
- Active - Matrix
- ActiveX
- Ad broker
- Ad Centre
- Ad inventory
- Adjacency
- Adjacent searching
- Admin Templates
- Administrator
- Adsense
- ADSL
- Advanced search
- Adware
- Adwords
- Affiliate
- Affiliate marketing
- Affiliate program link
- Affliate Network
- Age
- Agent name delivery
- AGP
- AI Content Detection
- AI Content Quality Signals
- AI Overviews
- AI Snippet
- AIFF
- AIX
- Ajax
- Alert Box
- Alexa
- Algorithm
- Algorithm based software
- Algorithmic search
- Aliweb
- Allintitle
- Allinurl
- AlltheWeb
- Alt attribute
- Alt tag
- Alta Vista
- Amazon
- AMP (Accelerated Mobile Pages)
- Analog
- Analytics
- Anchor text
- ANSI
- Answer Engine Optimisation
- Anthropic-AI
- AOL
- API
- Apple
- Applet
- Application
- Arbitrage
- Archie
- Architext spider
- Archive
- Article
- Article Schema
- ASCII
- Ask
- Ask Jeeves
- ASP
- ATA
- ATM
- Attribute
- Audience reach
- Author
- Authoring Tool
- Authority
- Automated bid management software
- Automated submission
- Autoresponder
- AVIF
B
- B2B
- B2C
- Back link
- Back-end (Administrator Backend)
- Back/Forward Cache
- Backbone
- Backlink
- Backside Bus
- Backward link
- Bad neighbourhood
- Bad request
- Bait & switch
- Bandwidth
- Banned
- Banner ad
- Banner blindness
- Banners
- Base Station
- BASIC
- Battelle, John
- Baud
- Begins with partial word matching
- Behavioural training
- Bells & whistles
- BERT
- Best of the Web
- Beta
- Beta Software
- Bias
- Bibliomatic analysis
- Bid
- Binary
- Bing Chat / Copilot
- BIOS
- Bit
- Bitmap
- Black hat SEO
- Blacklisted
- Block level analysis
- Blog
- Blog and ping
- Blog comment span
- Blogger
- Blogroll
- Bloptimization
- Blu-ray
- Bluetooth
- BMP
- Bold
- Bookmark
- Bookmarks
- Boolean
- Boolean search
- Boot
- Boot Disk
- Bot
- Bounce rate
- Brand
- Brand Mentions in LLMs
- Brand SERP
- Branded keywords
- Breadcrumb navigation
- BreadcrumbList
- BreadcrumbList Schema
- Bridge
- Bridge Page
- Bridge page / bridging page
- Brin, Sergy
- Broadband
- Broken link
- Brotli
- Browser
- Browser compatability
- Buffer
- Bug
- Burn
- Burst
- Bus
- Bush, Vannevar
- Business.com
- Buying cycle
- Byte
C
- C C++
- Cable Modem
- Cache
- CAD
- Calacanis, Jason
- Camera Raw
- Canonical URL
- Captcha
- Cascading style sheets
- Cascading StyleSheets (CSS)
- Catagorization
- Catch all listing
- Category
- Category Name
- Category Title
- CCBot
- CD
- CD-R
- CD-ROM
- CD-RW
- CDMA
- Certificate
- CGI
- Channels
- Character
- ChatGPT Browsing
- Check Out (an item)
- Check-in
- Chipset
- Chrome User Experience Report (CrUX)
- CISC
- Citation analysis
- Citation count
- Citation Flow
- Citation Rate
- Classification
- Clean Room
- Click Fraud
- Click through
- Click through rate
- Click tracking
- Client
- Client-side Scripting
- Clip Art
- Clipboard
- Cloaking
- Clock Speed
- Clone
- Closed loop
- Cluster
- Clustering
- CMOS
- CMS
- CMT
- CMTP
- CMYK
- Co-citation
- Code bloat
- Codec
- ColdFusion
- Collaborative filtering
- Collection
- Collection fusion
- Combined log file
- Comment (s)
- Comments tag
- Common log file
- Compact Flash
- Compacted information
- Components
- Computer
- Computer Ethics
- Concept search
- Conceptual links
- Configuration
- Configuration File
- Content Cluster
- Content decay
- Content Gap Analysis
- Content Item:
- Content Management System (CMS)
- Content pruning
- Content Refresh
- Content-based filtering
- content-visibility
- Contextual advertising
- Controller Card
- Conversational Search
- Conversion
- Conversion cost
- Conversion point
- Conversion rate (CR)
- Cookie
- Copy
- Copyright
- Core update
- Core Web Vitals
- Core Zip-file
- Cosine similarity
- Cost per click C-P-C (CPC)
- Cost per thousand
- Counter
- Counter / page counter
- CPA
- CPC
- CPL
- CPM
- CPS
- CPU
- Crawl
- Crawl Budget
- Crawl depth
- Crawl frequency
- Crawl Rate Limit
- Crawlability
- Crawler
- Critical CSS
- CRM
- Cron
- Cross linking
- Crossplatform
- CRT
- CSS
- CSS (Cascading style sheets)
- CTP
- CTR
- Cumulative Layout Shift (CLS)
- Cumulative Layout Shift Sources
- Cursor
- Cutts, Matt
- Cyberspace
- Cybersquatting
- Cybrarian
D
- Daemon
- Dance
- Dashboard
- Data traffic
- data-nosnippet
- Database
- Dataset
- Date range / date limit
- Dayparting
- DBMS
- DDR
- DDR2
- De-listing
- Dead link
- Debug
- Debugger
- Dedicated server
- Deep Link Ratio
- Deep link ration
- Deep linking
- Default
- Defragment
- Degauss
- Del.icio.us
- Delete
- Demographics
- Denton, Nick
- Description
- Description tag
- Desktop
- Desktop Publishing
- DHCP
- DHTML
- Dialog Box
- Digg
- Digital
- Digitise
- DIMM
- Direct hit
- Direct3D
- Directory
- DirectX
- Disavow File
- DLL
- DMOZ
- DNS
- DNS parking
- DNS Record
- Document Object Model (DOM)
- Document streams
- Dofollow
- Dogpile
- Domain / domain name
- Domain Authority
- Domain Name
- Domain Rating
- DOMIT
- Dongle
- Doorway page
- Dot Pitch
- Double Click
- Download
- Drag
- Dreamweaver
- Drill down
- Driver
- DRM
- DSL
- DTD
- Duplicate content
- DV
- DVD
- DVD-RAM
- DVD+R
- DVD+RW
- DVI
- DVR
- Dwell time
- Dynamic content
- Dynamic HTML (DHTML)
- Dynamic languages
- Dynamic optimization
- Dynamic Page
- Dynamic Rendering
E
- E-Commerce
- E-E-A-T (Experience, Expertise, Authoritativeness, Trust)
- Early Hints (HTTP 103)
- Edge SEO
- Editor
- Editorial link
- Edutainment
- Electronic library
- Emoticon
- Emphasis
- EMR
- Encryption
- End User
- Entity Salience
- Entity SEO
- Entry page
- EPC
- EPS
- EPV
- Error 400
- Error 401
- Error 403
- Error 404
- Error 500
- Error 501
- Error 503
- Ethernet
- Ethical SEO
- EUP
- Everflux
- Evergreen Content
- Exabyte
- Exact match
- Exbibyte
- Excite
- Expert document
- Expert index
- Expert link
- Expert page
- Expert Roundup
- Expired domain
- Expired Domain Abuse
- Extensions
- External link
- Eye candy
F
- FAA
- Faceted Navigation
- Facted search
- Fair use
- Fake copy listing
- False drop
- Fan-Out Queries
- FAQ
- FAQ schema
- FAT32
- Favicon
- Featured Snippet
- Feed
- Feed aggregator
- Feed reader
- fetchpriority
- FFA
- Fiber-Optic Cable
- File
- File Extension
- File System
- Filter
- FindWhat
- FiOS
- Firefox
- Firewall
- Firewire
- Firmware
- First Contentful Paint (FCP)
- First Input Delay (FID)
- Flash
- Flash Memory
- Flash page
- Flat File
- Floppy Disk
- Folder
- Font
- Format
- FPU
- Frame
- Frames
- Freeware
- Frequency cap
- Fresh content
- Front-end (Site Frontend)
- Frontpage/ Front Page
- Frozen
- FSB
- FTP
- FUD
- Full-text search engine / full-text inde
- Fuzzy matching
- Fuzzy search
G
- G / GG
- GAP
- Gateway
- Gateway Page
- GDPR Cookie Banner
- Generative Engine Optimisation
- Generative Engine Optimisation (GEO)
- Generative Search
- Ghost domain
- Ghost site
- Gibibyte
- GIF
- Gigabyte
- GIGO
- Gimpsey
- GIS
- Gladwell, Malcolm
- Global Check-in
- Go.com
- Godin, Seth
- GoGuides.org
- Google base
- Google bomb / Google bombing
- Google bowling
- Google Business Profile
- Google checkout
- Google dance
- Google Discover
- Google juice
- Google keyword tool
- Google onebox
- Google sitemaps
- Google supplemental index
- Google traffic estimator
- Google trends
- Google website optimiser
- Google whacking
- Google-Extended
- Googlebot / Google bot
- Googlebot IP Verification
- Googlewashing
- Gopher
- Goto / go to
- GPS
- GPTBot
- GPU
- Graphical search inventory
- Group
- Guest Post
- Guestbook spam
- GUI
- Gulliver
H
- Hacker
- Halftone
- Hallucination Grounding
- Hallway
- Hand submission
- Handle
- Hard Disk
- Hard Drive
- HDTV
- HDV
- Heading / heading tag
- Headings
- Headline
- Helpful Content Update
- Hexadecimal
- HFS
- Hidden Gems Update
- Hidden text
- Hierarchical clustering
- Hijacking
- Hilltop
- Hit
- Hit-and-run-page
- HITS
- Home directory
- Home Page
- Homepage / Home page / Home
- Hop Count
- Host
- Host Load
- Hot bot
- Hot linking
- Hover
- HowTo Schema
- Hreflang
- hreflang Return-Tag Errors
- hreflang x-default
- HTML
- HTTP
- HTTP/3
- HTTP/3
- HTTPS
- Hub
- Hub-and-Spoke Linking
- Hummingbird
- Hydration
- Hyper-Threading
- Hyperlink
- Hyperlink / link
- Hyperlink induced traffic search
- Hypertext
I
- iBL
- ICF
- Icon
- ICS
- IDE
- IEEE
- Illegal Operation
- IM
- Image Alt Text
- Image map
- Image Pack
- Image sitemap
- Image tag
- IMAP
- Impression
- Inbound link
- Index
- Index Bloat
- Index file
- Indexability
- indexifembedded
- Information architechture
- Information extraction / information fil
- Information gain
- Information retrieval
- Infoseek
- Infotainment
- Inkjet
- Inktomi
- INP
- Install
- Installer
- Installers
- Integrated Circuit
- Interaction to Next Paint (INP)
- Interlaced
- Internal Anchor Text Optimisation
- Internal link
- Internal linking
- International SEO
- Internet
- Internet explorer
- InterNIC
- Intranet
- Intro Text
- Inverse document frequency (IDF)
- Inverted file
- Invisible text
- Invisible web
- IO
- IP
- IP Address
- IP delivery
- IP spoofing
- IPX
- IRC
- IRQ
- ISA
- ISDN
- Islands Architecture
- ISO
- ISP
- IT
- Item
- IVR
J
K
- Kanoodle
- Kbps
- Kernel
- Keyboard
- Keystroke
- Keyword
- Keyword Density
- Keyword difficulty
- Keyword domain name
- Keyword funnel
- Keyword meta tag
- Keyword Phrase
- Keyword phrase / key phrase
- Keyword purchasing
- Keyword ratio
- Keyword research
- Keyword research tools
- Keyword search
- Keyword stuffing
- Keyword tag / keywords tag
- Keyword targeting
- KFCP
- Kibibyte
- Kickback marketing
- Kilobyte
- KISS
- Kleinberg, Jon
- Klog
- Knowledge Graph
- Knowledge Graph Entity
- Knowledge Panel
L
- LAN
- Landing page
- Landing page quality scores
- Largest Contentful Paint (LCP)
- Latency
- Latent Semantic Indexing
- Lazy Hydration
- Lazy Loading
- LCD
- LCP Element
- LDAP
- Lead
- Leaderboard
- Leaf
- Legacy data
- Lighthouse
- Link
- Link / hyperlink
- Link baiting
- Link building
- Link bursts
- Link checker / link validation
- Link churn
- Link Decay
- Link equity
- Link Equity Dilution
- Link Farm
- Link hoarding
- Link Popularity
- Link popularity / linkage
- Link Reclamation
- Link reputation
- Link rot
- Link swop / link swap
- Link tracking
- Link velocity
- Linkable content
- Linkage
- Linux
- Listicle
- Listserv
- Live.com
- LLM Visibility
- llms-full.txt
- llms.txt
- Load
- Local Citations
- Local Pack
- LocalBusiness Schema
- Localhost
- Log file
- Log file analysis
- Logic Gate
- Login
- Logspam / log spamming
- Long tail / longtail
- Long-tail keyword
- Looksmart
- Lossless
- Lossy
- Lossy Redirects
- LPI
- LSI
- Lycos
M
- Mac Address
- Mac OS
- Mac OS X
- Macintosh
- Macro
- Magellan
- Main Body
- Main Text
- Mainframe
- Malda, Rob
- Malware
- Mambot
- Manager
- Manual review
- Manual submission
- March 2024 Core Update
- Mass Mail
- Mass submission
- Match
- Match driver
- max-image-preview
- max-snippet
- max-video-preview
- Mbps
- MCA
- Mebibyte
- Mechanical turk
- Media
- Media Files
- Medic Update
- Megabyte
- Megahertz
- Meme
- Memory
- Memory Stick
- Menu Bar
- Meta description tag
- Meta keywords tag
- Meta refresh
- Meta robots tag
- Meta search engine
- Meta Tag
- Meta tags
- Metacrawler
- Metadata
- Metafile
- MFA
- Microprocessor
- Microsoft
- MIDI
- Mindshare
- Mini DV
- Mining company
- MIPS
- Mirror
- Mirror Site
- Mirror sites
- Mirroring
- Mnemonic
- Mobile-First Indexing
- Mobilegeddon
- Model-Aware Schema
- Modem
- Module Position
- Modules
- Moodle
- Mosaic / NCSA Mosaic
- Most wanted respsonse (MWR)
- Motherboard
- Mouse
- Mousetrapping / circle jerking
- Movable type
- Moved permanently
- Mozilla
- MP3
- MPEG
- MSN search
- Multi-Location SEO
- Multidimensional scaling
- Multimedia
- Multiplatform
- MUM (Multitask Unified Model)
- MySpace
- MySQL
N
- Name Server
- NAP Consistency
- NAT
- Native File
- Natural language processing
- Natural linking
- Navboost
- Navigation
- Near-Me Queries
- Negative SEO
- NetBIOS
- Netiquette
- Netscape
- Netscape navigator
- Network
- Newbie
- NewHoo
- NewsArticle Schema
- Newsfeed
- Newsgroup
- NIC
- Niche
- Niche Edit
- NNTP
- NOC
- Node
- Nofollow
- Noindex
- noindex, follow
- Northern light
- NTFS
- NTSC
- Null
- Null Character
- Nybble
O
- Obfuscation
- OCR
- ODBC
- ODP (Open Directory Project) DMOZ
- OEM
- Off the page / off the page factors / of
- Offline
- OLAP
- OLE
- Online
- Ontology
- Open Graph
- Open source
- Open Source (OS)
- Open text
- OpenGL
- Opera
- Operating System
- Operators
- Optical Drive
- Optical Media
- Optimize / optimization
- Organic search results
- Organization Schema
- Origination page
- OSPE
- Outbound link
- Overture
- Overture keyword selector tool
P
- P2P
- Packet
- Packet sniffing
- Page jacking / pagejacking
- Page popularity
- Page view / page impression / page reque
- Page, Larry
- Pagerank
- PageRank hoarding
- PageSpeed Insights
- Pagination (SEO)
- Paid inclusion
- Paid listing
- Panda
- Parallel Port
- Parameters
- Parasite SEO
- Parentheses
- Parse
- Partition
- Partytown
- Passage Ranking
- Password
- Paste
- patTemplate
- Pay for performance
- Pay per lead / PPL
- Pay-per-click search engine
- Payload
- PCB
- PCI
- PCMCIA
- PDA
- Pebibyte
- Penalty
- Penguin
- People Also Ask (PAA)
- Peripheral
- Perl
- Permalink
- Perplexity Rank
- PerplexityBot
- Personalization
- Personally identifiable information
- Petabyte
- Pharming
- Phishing
- PHP
- Phrase search
- Pillar Page
- PIM
- Ping
- Pipeline
- Pixel
- Placement
- Plain Text
- Platform
- Plug-in
- PNG
- Pogo-sticking
- Poison word
- Politeness window
- Polls
- Pop-under / popup / pop up
- POP3
- Popunder
- Popup
- Port
- Portal
- Portal page
- Portal site
- Position Zero
- Positioning
- PostScript
- Power User
- PPC
- PPC / Pay per click
- PPGA
- PPL
- PPP
- PPV
- PR
- PR0 / PR zero
- PRAM
- Pre / Postcoordination of terms
- Pre-rendering
- Precision
- Preconnect
- Prefetch
- Preload
- Prerender
- Preview
- Priority Hints
- Private Blog Network (PBN)
- Probablistic model
- Process
- Product Reviews Update
- Product Schema
- Profit elasticity
- Programmatic SEO
- Progressive Scan
- Progressive Web App (PWA)
- Projects
- Promotion
- Prompt Stuffing
- Protocol
- Proximity
- Proximity searching
- Proxy Server
- PSA
- Public Back-end
- Public Front-end
- Published
- Publisher
Q
R
- R/S ratio
- Raid
- RAM
- RankBrain
- Ranking
- Raster Graphic
- Raw Data
- Raw File
- RDRAM
- Re-submission
- Readme
- Real User Monitoring (RUM)
- RealNames
- Recall
- Reciprocal link
- Record
- Recursion
- Recursive Function
- Redirect
- Redirect Chains
- Redirect Loops
- Referrer
- Refresh / refresh tag
- Refresh Rate
- Registered User
- Registrar
- Registration
- Registry
- Reinclusion
- Relative link
- Relevance / relevancy
- Relevancy algorithm
- Remote Access
- Remote User
- Render Budget
- Render-Blocking Resources
- Reputation management
- Resolution
- Resource Hints
- Results list
- Retrieval-Augmented Generation (RAG)
- Reverse index
- Reverse Silo
- Review Snippet
- Reviews System
- RGB
- Rich Results Test
- Rich Text
- Right Click
- Ripcoding
- RISC
- Robot
- Robots.txt
- Robots.txt / robots text file
- Robots.txt Allow Precedence
- ROI
- ROM
- Root
- Router
- RSS
- RTF
- Runtime
- RUP
S
- Safari
- Safe Mode
- Salton, Gerard
- sameAs Property
- SATA
- Scaled Content Abuse
- Schema.org
- Scooter
- Score
- Scored keyword phrase
- Script
- SCSI
- Scumware
- SD
- SDRAM
- SDSL
- Search
- Search Console
- Search engine
- Search engine marketing / optimisation /
- Search Generative Experience (SGE)
- Search history
- Search hours
- Search Intent
- Search jacking
- Search marketing
- Search results
- Search terms
- Search Tree
- Search volume
- SearchKing
- Section
- Sector
- SEM
- Semantic Chunking
- Semantic search
- SEO
- SEO coywriting
- Serial Port
- SERP
- SERP Feature
- Server
- Server logs
- Server-Side Rendering (SSR)
- Server-side scripting
- Server-Side Tagging
- Server-Timing Header
- Service Area Business
- Service worker
- Session ID
- Shadow domain
- Shareware
- Shell
- SHTML
- Sidewinder
- Similarity
- SIMM
- Singular value decomposition
- Siphoning
- Site
- Site Hit
- Site Reputation Abuse
- Site search
- Site Templates
- Sitelinks
- Sitemap
- Sitewide Links
- Skewing
- Skin
- Skyscraper
- Slamming
- Slashdot
- Slurp
- SMART
- SMS
- SMTP
- Sniffer
- Snippet
- SOAP
- Social media
- Socket
- Soft 404
- Solid State
- Sorting results
- Spam
- SpamBrain
- Spamdexing
- Spamming
- Speakable Schema
- Speculation Rules API
- Spider
- Spider / spyder
- Spider Trap
- Spidering
- Splash page
- Splog
- Sponsored link
- Spoofing
- Spyware
- SQL
- Squidoo
- SSI
- SSL
- Stack
- Standalone
- Static content
- Static Content Item
- Static Page
- Static Site Generation (SSG)
- Stats / statistics
- Stealth
- Stemming
- Stop character
- Stop words
- Streaming
- Streaming SSR
- String
- Structured Data
- Sub-category
- Subdomain
- Subject-specific popularity
- Submission
- Submission rules
- Submission service
- Submission software
- Submit
- Substring matching
- Sullivan, Danny
- Super Administrator
- Supplemental results
- Switch
- Syndication
- System Hardening
- System Requirements
- System Resources
- System Software
- System Unit
- Systray
T
- T-Rex
- T1
- T3
- Tag
- Tape Drive
- Task Bar
- Taxonomy
- TCP IP
- Tebibyte
- Technorati
- Telnet
- Template
- Templates
- Teoma
- Terabyte
- Term frequency (TF)
- Term vector database
- Term vectors
- Termination page
- Text Editor
- Text link ads
- TF-IDF
- TFT
- The tragedy of the commons
- Theme engine
- Thesaurus
- Thick Client
- Thin Client
- Third-Party Cookies
- Thread
- Throwaway domain
- Thyristor
- TIFF
- Tiger
- Time to First Byte (TTFB)
- Title
- Title Alias
- TLD
- Token
- Toolbar
- Top Stories
- Top-level page
- Topic-sensitive PageRank
- Topical Authority
- Topical Cluster
- Toslink
- Total Blocking Time
- Trackback
- Traffic
- Traffic-death redesign
- Trinitron
- Trojan Horse
- Trust Flow
- TrustRank
- TTL
- Turbo10
- Tutorial
- TWAIN
- Tweak
- Twitter Card (X Card)
- Type-less search engine
- Typeface
- Typepad
U
- U
- UDP
- UGC link
- Ultra DMA
- UML
- unavailable_after
- UNC
- Unethical SEO
- Unique user
- Unique visitor / s / uniques
- Unique Visitors
- Unix
- Unlinked Mention
- Unpublish(ed):
- Unpublish(ed):
- Update
- Upload
- URL
- URL conversion
- URL rewrite
- URL submission
- URL variable
- Usability
- Usage data
- USB
- Usenet
- User Agent
- Username
- Utility
V
- Variable /URL variable
- VCI
- Vector
- Vector Embedding
- Vector Embeddings in SEO
- Vector Graphic
- Veronica
- Vertical portal
- Vertical search
- VFAT
- VGA
- Video Carousel
- Video sitemap
- VideoObject Schema
- View Transitions API
- Viral marketing
- Virtual Domain
- Virtual Hosting
- Virtual Memory
- Virtual Reality
- Virtual server
- Virus
- Visitor
- VLB
- VoIP
- Volume
- Vortal
- VPI
- VPN
- VRAM
- VRML
W
- WAIS
- Wales, Jimmy
- WAN
- Waveform
- Wayback machine
- Web copywriting
- Web Host
- Web Hosting
- Web Links
- Web Page
- Web record
- Web Ring
- Web Server
- Webcrawler
- Webmaster
- WebP
- Website
- Weighting
- WEP
- White hat SEO
- White Paper
- WHOIS
- Wi-Fi
- Widget
- Wiki
- Wikipedia
- Win32
- Windows
- Windows XP
- Winsock
- Wireless
- Wisenut
- Wizard
- WML
- Word stuffing
- Word Wrap
- Wordnet
- Wordpress
- Wordtracker
- Workspace
- Worm
- WPA
- Wrapper
- WWW
- WYSIWYG
- WYSIWYG Editor