A list in which each item consists of two parts: a word, phrase, term, graphic, chemical structure, or equation paired with one of more descriptions, discussions, explanations, or definitions of it.
The definition <def> part of an item in a two-part (definition) list need not be a “definition” in the strict dictionary sense of that word. Such a definition could be a discussion, explanation, expansion, or something that tells the reader about the <term>. When a <def-list> is within a <glossary> element, the definitions are assumed to be real definitions.
The following, in order:
<article> ... <back>... <glossary> <def-list> <title>ABBREVIATIONS</title> <term-head>Expansion</term-head> <def-head>Abbreviation</def-head> <def-item><term id="G1">PAP I</term> <def><p>poly(A)polymerase I</p></def> </def-item> <def-item><term id="G2">PNPase</term> <def><p>polynucleotide phosphorylase</p></def> </def-item> </def-list> </glossary>... </back> </article>