DITA provides structured ways to create glossaries and define terms within content. This structured approach makes it easier to manage and organize glossary terms and their definitions.

In DITA, <glossentry>, <glossterm>, and <glossdef> can be used to structure glossaries and definitions.

<glossentry> Element:

The <glossentry> element represents an entry in the glossary. It consists of two key child elements: <glossterm> for the term being defined and <glossdef> for the definition of the term.

<glossentry id="term_dita">
    <glossterm>DITA</glossterm>
    <glossdef>Darwin Information Typing Architecture (DITA) is an XML-based, open standard for creating, organizing, and publishing structured content.</glossdef>
</glossentry>

<glossterm> Element:

The <glossterm> element is used to define the term itself.

<glossdef> Element:

The <glossdef> element is used to provide the definition of the term.

Example:

Here’s an example of how a glossary term and definition are structured within a DITA topic:

<topic id="glossary_dita">
    <title>Glossary of DITA Terms</title>
    <glossentry id="term_dita">
        <glossterm>DITA</glossterm>
        <glossdef>Darwin Information Typing Architecture (DITA) is an XML-based, open standard for creating, organizing, and publishing structured content.</glossdef>
    </glossentry>
    <glossentry id="term_topic">
        <glossterm>Topic</glossterm>
        <glossdef>In DITA, a topic is a single self-contained unit of information or content that focuses on a specific subject or task.</glossdef>
    </glossentry>
</topic>

In this example, two glossary entries are defined in a DITA topic, each with a <glossterm> representing the term and a <glossdef> representing its definition.