DictionaryRoot: calare
Latin
calare
to announce, summon
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noun
nomenclature
NOH-mun-klay-cher/ˈnəʊmənkleɪtʃər/
A system or practice of naming things in a particular field.
Etymology
The pieces express “calling names,” originally an activity performed by a namer or announcer. The meaning shifted from naming to a catalogue of names, then to the organized terminology of a subject.