Definitions

from The Century Dictionary.

  • noun The deltoid muscle. See deltoid, n.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • adjective Like a triangle, triangular.
  • noun Short for deltoideus muscle much as deltoid is used as short for deltoid muscle.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

deltoid + -eus. From Ancient Greek adjective δελτοειδής. See also: δέλτα (delta) the fourth letter of the Greek alphabet.

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