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.

Content Model

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

Expanded Content Model

(term, def*)


The following, in order:

This element may be contained in:



  <def-item><term id="G1">PAP I</term>
  <def><p>poly(A)polymerase I</p></def>
  <term id="G2">PNPase</term>
  <def><p>polynucleotide phosphorylase</p></def>