Deltoid Definition

dĕltoid
deltoids
noun
deltoids
A thick triangular muscle covering the shoulder joint, used to raise the arm from the side.
American Heritage Medicine
The deltoid muscle.
Webster's New World
Synonyms:
adjective
Shaped like a delta; triangular.
Webster's New World
Designating or of a large, triangular muscle which covers the shoulder and raises the arm away from the side.
Webster's New World
Having the shape of a geometric kite.
American Heritage
Of or relating to the deltoid.
American Heritage Medicine
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Other Word Forms of Deltoid

Noun

Singular:
deltoid
Plural:
deltoids

Origin of Deltoid

  • From deltoideus, which was in turn from Ancient Greek adjective δελτοειδής (deltoeidēs). See also: δέλτα (delta) the fourth letter of the Greek alphabet.

    From Wiktionary

  • New Latin deltoīdēs from Greek deltoeidēs triangular delta delta delta -oeidēs -oid

    From American Heritage Dictionary of the English Language, 5th Edition

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