glossary

n. list of terms and definitions (usually at the end of a book); dictionary of technical terms

A glossary is a list of terms in a particular domain of knowledge with the definitions for those terms. Traditionally, a glossary appears at the end of a book and includes terms within that book which are either newly introduced or at least uncommon.A bilingual glossary is a list of terms in one language which are defined in a second language or glossed by synonyms (or at least near-synonyms) in another language.In a more general sense, a glossary contains explanations of concepts relevant to a certain field of study or action. In this sense, the term is contemporaneously related to ontology.
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(n.)
A collection of glosses or explanations of words and passages of a work or author; a partial dictionary of a work, an author, a dialect, art, or science, explaining archaic, technical, or other uncommon words.
  

Noun
1. an alphabetical list of technical terms in some specialized field of knowledge; usually published as an appendix to a text on that field
(synonym) gloss
(hypernym) wordbook