no·men·cla·ture (n??m?n-kl??ch?r, n?-m?n?kl?-)n.1. A system of names used in an art or science: the nomenclature of mineralogy.2. The system or procedure of assigning names to groups of organisms as part of a taxonomic classification: the rules of nomenclature in botany.[Latin n?mencl?t?ra, from n?mencl?tor, nomenclator; see nomenclator.]no?men·cla?tur·al adj.American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.nomenclature (n???m?nkl?t??; US ?n??m?n?kle?t??r) nthe terminology used in a particular science, art, activity, etc[C17: from Latin n?mencl?t?ra list of names; see nomenclator]Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014no?men?cla?ture (?no? m?n?kle? t??r, no??m?n kl? t??r, -?t???r) n. 1. a set or system of names or terms, as those of a particular science or art. 2. the names or terms comprising a set or system. [1600?10;