GEO Glossary: Complete Terminology Reference

This glossary provides clear definitions for all key terms in Generative Engine Optimization and AI search.

A

AEO (Answer Engine Optimization): The practice of formatting content so AI systems can extract and display direct answers to user queries.

AI Citation: When an AI system references your content as a source in its generated answer.

AI Crawl Signals: Technical indicators AI systems use to discover and index content, including sitemaps, llms.txt, and structured data.

AI Overviews: Google's AI-generated answer summaries displayed at the top of search results.

ai.txt: A machine-readable file declaring your site's AI access policies, attribution preferences, and usage terms.

Answer Extraction: The process by which AI systems identify and pull specific answers from web content to include in generated responses.

C

Citation Frequency: How often your content is cited by AI systems across all platforms.

Content Cluster: A group of related articles organized around a central topic, building topical authority.

Content Feed: RSS, Atom, or JSON feeds that notify AI systems of new and updated content.

Conversational Search: AI search interactions where users ask follow-up questions and refine queries through dialogue.

D

Definition Block: A content pattern (term + category + function) optimized for AI extraction of definitions.

Direct Answer: A specific, actionable answer extracted from content and displayed without requiring the user to visit the source.

E

E-E-A-T: Experience, Expertise, Authoritativeness, and Trustworthiness — quality signals used by search engines.

G

GEO (Generative Engine Optimization): The practice of structuring content so AI systems can understand, retrieve, and cite it in generated answers.

GEO Content Strategy: The planning and creation of content specifically designed for AI search visibility.

J

JSON-LD: JavaScript Object Notation for Linked Data — the preferred structured data format for search engines.

L

llms.txt: A text file placed at a website's root that provides AI systems with a structured guide to the site's content.

llms-full.txt: An extended version of llms.txt containing complete content for AI consumption.

S

Schema.org: A collaborative vocabulary for structured data markup recognized by major search engines.

Source Selection: The process by which AI systems choose which content sources to cite in generated answers.

Structured Data: Machine-readable code (typically JSON-LD) that describes content type, properties, and relationships.

T

Topical Authority: The depth and breadth of content coverage on a specific topic, influencing AI citation likelihood.

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