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

nomenclature

noun
 
/nəˈmeŋklətʃə(r)/
 
/ˈnəʊmənkleɪtʃər/
[uncountable, countable] (formal)
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  1. a system of naming things, especially in a branch of science
    • zoological nomenclature
    Word Originearly 17th cent.: from French, from Latin nomenclatura, from nomen ‘name’ + clatura ‘calling, summoning’ (from calare ‘to call’).
See nomenclature in the Oxford Advanced American Dictionary
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