> ## Documentation Index
> Fetch the complete documentation index at: https://wiki.platelunchcollective.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Definition-First Writing

> Definition-first writing is a content approach in which a term, concept, or topic is defined clearly and completely at the start of the piece or section, bef...

*Content format* · *Content Strategy*

## Definition

Definition-first writing is a content approach in which a term, concept, or topic is defined clearly and completely at the start of the piece or section, before any elaboration, context, or application. The definition precedes the explanation.

## Why It Matters for AI Search

When a user asks an AI system "what is X," the system often generates an answer to that question directly, frequently leveraging retrieved content. Definition-first writing ensures the answer is available in the first sentence or paragraph, not buried after three paragraphs of background. For glossaries, explainers, and educational content specifically, definition-first structure is one important formatting decision among many for AI citation eligibility.

## Related Terms

<CardGroup cols={2}>
  <Card title="Answer-first formatting" href="/ai-search-glossary/answer-first-formatting" />

  <Card title="Above-the-fold answer" href="/ai-search-glossary/above-the-fold-answer" />

  <Card title="Content extractability" href="/ai-search-glossary/content-extractability" />

  <Card title="Atomic content unit" href="/ai-search-glossary/atomic-content-unit" />

  <Card title="Declarative content" href="/ai-search-glossary/declarative-content" />
</CardGroup>

## Relevant Plate Lunch Collective Services

[Citation-Ready Content](https://www.platelunchcollective.com/services/citation-ready-content)  [Answer Engine Optimization](https://www.platelunchcollective.com/services/answer-engine-optimization)