tertial Hear it!

tertial definition

ter·tial (tʉr′s̸həl)

adjective

designating or of the flight feathers, forming the third row, on the basal part of a bird's wing

Etymology: < L tertius, third + -al

noun

a tertial feather

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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