ter-

1.
a combining form meaning “thrice,” used in the formation of compound words:
tercentennial.
Origin
< Latin, combining form of ter; akin to trēs three
British Dictionary definitions for ter-

ter-

combining form
1.
three, third, or three times: tercentenary
Word Origin
from Latin ter thrice; related to trēsthree
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."