ExplainerAnswer engine optimization

Glossary Pages: The Cheapest Citations in AI Search

by 3 min read

Short answerglossary pages

A surprising share of the citations we see in AI answers point to definition pages. "What is X" questions are among the most common prompts in any B2B category, and when an engine answers one, it tends to cite the page that defined the term most cleanly.

Those pages are cheap to write. A good entry is two to four hundred words. Yet most companies have no glossary, or have one auto-generated years ago that defines terms nobody searches for.

Why engines like definitions

An engine answering "what is a sales engagement platform" needs a sentence it can quote with confidence. Definition pages are built around exactly that sentence. There is no narrative to untangle, no opinion to weigh, just a term and its meaning.

In our testing, engines also tend to favor pages where the term appears in the title, the first heading, and the first sentence. A glossary entry does this by nature. A blog post that mentions the term in paragraph six does not.

What to include

Pick terms by looking at what buyers actually ask, not what you wish they knew. Three sources work well: questions your sales team fields, "People also ask" results for your category keywords, and the vocabulary in Reddit threads about your space.

A good list mixes three kinds of terms:

  • Category terms that define what you sell: the thing a buyer searches before they know any vendor names.
  • Adjacent terms that buyers encounter while evaluating: the integrations, standards, and processes around your product.
  • Terms you coined or use distinctively, if they have started to spread beyond your own site.

Skip terms that already have a definitive answer from a standards body or an encyclopedia unless you can add something specific to your industry context.

How to write an entry

Each entry gets its own URL. One page per term, not one giant page with anchors. A dedicated page gives a clearer signal about what the passage is about.

Structure that tends to get quoted:

  1. Title: the term, alone or as "What is [term]?"
  2. First sentence: a complete, standalone definition. "A sales engagement platform is software that schedules, sends, and tracks outbound communication across email, phone, and social channels." If this sentence is all an engine quotes, it must be correct and sufficient.
  3. Second paragraph: what it is not, or how it differs from the nearest confusable term. This is where most definitions become useful and where competitors' definitions are usually weak.
  4. A concrete example. One short scenario in plain terms.
  5. Related terms, linked internally.

Keep your product out of the first two paragraphs. A definition that reads "a sales engagement platform, like Acme, is..." signals promotion, and engines seem to weight neutral definitions more heavily. Mention your product at the end, if at all, in a sentence about how the concept applies to it.

Add DefinedTerm schema

Mark each entry up with DefinedTerm schema, with the term and definition matching the page exactly. It guarantees nothing, but it removes ambiguity about what the page is, and a schema markup generator produces it in a minute.

The mistakes

Defining too many terms. Fifty mediocre entries lose to twelve excellent ones. Each entry competes against every other definition on the web for that term.

Circular definitions. "Revenue intelligence is intelligence about revenue." Engines skip these, and so do readers.

Letting them rot. Terms shift meaning. If your definition of a category term is three years old and the category has moved, you are now the stale source.

Writing for search volume instead of buyers. A term with huge volume that your buyers never use will bring citations that lead nowhere.

What it adds up to

Glossary citations rarely drive direct conversions. What they do is put your domain in front of an engine repeatedly as a source it has trusted on the fundamentals of your category. When the same engine later assembles a shortlist for "best [category] tools," a domain it has cited a dozen times is a domain it knows. We cannot prove that carries over, but the pattern in share-of-answer tracking is consistent enough that we build glossaries early in most engagements at AEO GEO Labs.

Draft three entries this week: your category term, the term buyers confuse it with, and the one your sales team explains most often. Write the first sentence of each so it could stand alone. Then check whether an engine can read the page cleanly with the free answer-ready checker from AEO GEO Labs, and ship them.

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