• taxonomyA collection of controlled vocabulary terms organized into a hierarchical structure. Each term in a taxonomy is in one or more parent/child (broader/narrower) relationships to other terms in the taxonomy.
  • termOne or more words designating a concept. See also compound term, entry term, and precoordinated term.
  • term recordA collection of information associated with a term in a controlled vocabulary, including the history of the term, its relationships to other terms, and, optionally, authorities for the term.
  • thesaurusA controlled vocabulary arranged in a known order and structured so that the various relationships among terms are displayed clearly and identified by standardized relationship indicators. Relationship indicators should be employed reciprocally. Its purpose is to promote consistency in the ...
  • top termThe broadest term in a controlled vocabulary hierarchy, sometimes indicated by the abbreviation TT.
  • transcriptionThe process of recording the phonological and/or morphological elements of a language in terms of a specific writing system.
  • transliterationThe process of recording the graphic symbols of one writing system in terms of the corresponding graphic symbols of another writing system.
  • tree structureA controlled vocabulary display format in which the complete hierarchy of terms is shown. Each term is assigned a tree number or line number which leads from the alphabetical display to the hierarchical one. The hierarchical display is also known as a systematic display.
  • typographyThe style, arrangement, appearance, or typeface used to represent information.