deltoid Hear it!

deltoid definition

del·toid (del′to̵id′)

adjective

  1. shaped like a delta; triangular
  2. designating or of a large, triangular muscle which covers the shoulder and raises the arm away from the side

Etymology: Gr deltoeidēs: see delta & -oid

noun

the deltoid muscle

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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