Continuously updated · AI Dictionary
The language of AI,
clearly defined.
A field guide to the words changing how we build, work and think—from token and transformer to AI agents and vibe coding.
509 terms
10 topics
1847–2026 timeline
Built as a living reference
Clear words. Useful context.
01
Plain English firstThe definition comes before the jargon.
02
Usage over hypeEstablished meanings are separated from new or informal ones.
03
Show the trailSources appear on entries as they are reviewed.
Latest update · October 2026
New in the AI Dictionary
Fresh language for the newest shifts in AI, explained without the jargon.
GEO poisoning
the deliberate publication or optimization of false, misleading, or adversarial web content so that AI search systems retrieve, cite, or repeat it in generated answers and recommendations
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proof of personhood
a verification method or digital credential that allows an online service to establish that a participant is a real, usually unique human rather than a bot, AI agent, or duplicate identity, often without learning the person's legal identity
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memory wall
a performance limit reached when a processor or AI accelerator can perform calculations faster than the memory system can supply, move, or hold the required data, making memory bandwidth, capacity, or data transfer the main bottleneck
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Know Your Agent
a process for verifying an AI agent's identity, the person or organization it represents, and the scope of authority granted to it before allowing the agent to access services, exchange data, or initiate transactions
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