Definition of nomenclature noun from the Oxford Advanced Learner's Dictionary

 

nomenclature

 noun
noun
BrE BrE//nəˈmenklətʃə(r)//
 
; NAmE NAmE//nəˈmenklətʃər//
 
, NAmE//ˈnoʊmənkleɪtʃər//
 
[uncountable, countable](formal)
 
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a system of naming things, especially in a branch of science zoological nomenclature Word Origin early 17th cent.: from French, from Latin nomenclatura, from nomen ‘name’ + clatura ‘calling, summoning’ (from calare ‘to call’).
See the Oxford Advanced American Dictionary entry: nomenclature