The Collaborative International Dictionary of English v.0.48:

Nomenclature \No"men*cla`ture\, n. [L. nomenclatura: cf. F.
   nomenclature. See Nomenclator.]
   1. A name. [Obs.] --Bacon.
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   2. A vocabulary, dictionary, or glossary. [R.]
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   3. The technical names used in any particular branch of
      science or art, or by any school or individual; as, the
      nomenclature of botany or of chemistry; the nomenclature
      of Lavoisier and his associates.
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