2 definitions found From WordNet (r) 2.0 [wn]: onomasticon noun: a list of proper nouns naming persons or places From The Collaborative International Dictionary of English v.0.44 [gcide]: Onomasticon \On'o*mas"ti*con\, noun [NL., fr. Gr. ? (sc.?), fr. ?. See {Onomastic}.] A collection of names and terms; a dictionary; specif., a collection of Greek names, with explanatory notes, made by Julius Pollux about a. d. 180.

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