Definition List: Definition Item


One entry in a two-part list. The entry holds a term and one or more of the definitions/descriptions of that term.


id Identifier

Related Elements

A <def-list> may have a <title> naming the entire list, followed by optional headings for terms and their definitions. <term-head> contains the heading over the first (term) column, and <def-head> contains the heading for the second (definition) column; neither serves as a container element for terms or definitions. Individual <term>s and their <def>s are paired in <def-item>s.

Model Information

Content Model

<!ELEMENT  def-item     %def-item-model;                             >


The following, in order:

This element may be contained in:

<def-list> Definition List

Tagged Example

<glossary id="bid.1237">
<term id="bid.1238">3-D or 3D</term>
<term id="bid.1722">Accession number</term>
<p>An Accession number is a unique identifier given 
to a sequence when it is submitted to one of the DNA 
repositories (GenBank, EMBL, DDBJ). The initial 
deposition of a sequence record is referred to as 
version 1. If the sequence is updated, the version 
number is incremented, but the Accession number will 
remain constant.</p>