toponomy

Thesaurus

Noun	1.	toponomy - the nomenclature of regional anatomytoponymynomenclature, terminology, language - a system of words used to name things in a particular discipline; "legal terminology"; "biological nomenclature"; "the language of sociology"
	2.	toponomy - the branch of lexicology that studies the place names of a region or a languagetoponymylexicology - the branch of linguistics that studies the lexical component of language