---
title: Glossary entry
description: Write glossary term definitions.
image: https://developers.cloudflare.com/cf-twitter-card.png
---

> Documentation Index  
> Fetch the complete documentation index at: https://developers.cloudflare.com/style-guide/llms.txt  
> Use this file to discover all available pages before exploring further.

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# Glossary entry

## Definition

A single term and corresponding definition in the glossary.

## Used in

Glossary, documentation pages, tooltips.

## Structure

### Data

The data underlying our glossary lives with YAML files in the [/src/content/glossary/\* ↗](https://github.com/cloudflare/cloudflare-docs/tree/production/src/content/glossary) folder.

Each file should be structured similar to the following:

dns.yaml

```

---

productName: DNS

entries:

  - term: active zone

    general_definition: |-

      a DNS zone that is active on Cloudflare requires changing its nameservers to Cloudflare's for management.

    associated_products:

      - Cloudflare One


  - term: apex domain

    general_definition: |-

      apex domain is used to refer to a domain that does not contain a subdomain part, such as `example.com` (without `www.`). It is also known as "root domain" or "naked domain".


  - term: DNS over HTTPS

    general_definition: |-

      DNS over HTTPS (DoH) is a standard for encrypting DNS traffic, preventing tracking and spoofing of DNS queries.

    associated_products:

      - 1.1.1.1

      - Cloudflare One


  - term: DNS over TLS

    general_definition: |-

      DNS over TLS (DoT) is a standard for encrypting DNS traffic using its own port (853) and TLS encryption.

    associated_products:

      - 1.1.1.1

      - Cloudflare One


```

Relevant values include the following:

* `productName` string required  
   * Core product associated with this file. Should always match the same formatting / styling used in `associated_products`.
* `entries` object required  
   * `term` string required  
         * The glossary term itself.  
   * `general_definition` string required  
         * Definition of the term. Should be general enough to apply to multiple products. Should also start with a lowercase letter unless starting with a proper noun.  
   * `associated_products` array optional  
         * If the term is associated with other products. Any names used should correspond to the `productName` of that associated file.

### Usage

Because of the [structured data](#data) associated with our glossaries, we can pull these terms into multiple places.

#### Product-level glossary

A product-level glossary includes all terms associated with a particular product, which will pull in terms directly in that product's glossary file and any terms that include the product in its `associated_products`.

/src/content/docs/dns/glossary.mdx

```

---

title: Glossary

pcx_content_type: glossary

---


import { Glossary } from "~/components";


Review the definitions for terms used across Cloudflare's DNS documentation.


<Glossary product="dns" />


```

#### Glossary definition

Pull glossary definitions directly into your Markdown by using the `<GlossaryDefinition>` component.

> A DNS zone that is active on Cloudflare requires changing its nameservers to Cloudflare's for management.

Is a quoted definition that comes from:

```

<GlossaryDefinition term="active zone" prepend="An active zone is " />


```

Properties are:

* `term` string required  
   * Should match a term within an existing glossary YAML file.
* `prepend` string optional  
   * Text to add before a definition.

#### Glossary tooltip

Pull component definitions into a focusable tooltip for a specific phrase by using the `<GlossaryTooltip>` component.

Here's a tooltip example.

```

Here's a <GlossaryTooltip term="active zone">tooltip</GlossaryTooltip> example.


```

Properties are:

* `term` string required  
   * Should match a term within an existing glossary YAML file.
* `prepend` string optional  
   * Text to add before a definition.
* `link` string optional  
   * Wraps the inner text in a markdown link, similar to normal markdown formatting.

Because of space limitations, the tooltip will always default to the short definition of a term, meaning the definition text before the first line break.

```json
{"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"item":{"@id":"/directory/","name":"Directory"}},{"@type":"ListItem","position":2,"item":{"@id":"/style-guide/","name":"Style Guide"}},{"@type":"ListItem","position":3,"item":{"@id":"/style-guide/documentation-content-strategy/","name":"Product docs content strategy"}},{"@type":"ListItem","position":4,"item":{"@id":"/style-guide/documentation-content-strategy/component-attributes/","name":"Component attributes"}},{"@type":"ListItem","position":5,"item":{"@id":"/style-guide/documentation-content-strategy/component-attributes/glossary-entry/","name":"Glossary entry"}}]}
```