[ on-uh-mas-tik ]
/ ˌɒn əˈmæs tɪk /


of or relating to proper names.
of or relating to onomastics.
Law. (of a signature) written in the handwriting other than that of the document, instrument, etc., to which it is appended.

Origin of onomastic

1600–10; < Greek onomastikós, derivative of onomázein to name; see -tic
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for onomastic


/ (ˌɒnəˈmæstɪk) /


of or relating to proper names
law denoting a signature in a different handwriting from that of the document to which it is attached

Word Origin for onomastic

C17: from Greek onomastikos, from onomazein to name, from onoma name
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for onomastic



1716, from French onomastique (17c.), from Greek onomastikos "of or belonging to naming," from onomastos "named," verbal adjective of onomazein "to name," from onoma "name" (see name).

Online Etymology Dictionary, © 2010 Douglas Harper