ternion Hear it!

ternion definition

ter·nion (tʉr′nē ən, -än′)

noun

Now Rare a set of three; triad

Etymology: L ternio, triad < terni: see ternary

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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