- a combining form meaning “thrice,” used in the formation of compound words: tercentennial.
Origin of ter-
< Latin, combining form of ter; akin to trēs three
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- three, third, or three timestercentenary
from Latin ter thrice; related to trēs three
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 ter-
word-forming element meaning "thrice, three times," from Latin ter "thrice," from *tris-, from root of three. Cf. Latin tertius "third."
Online Etymology Dictionary, © 2010 Douglas Harper