DELTOID

deltoid

(adjective) triangular or suggesting a capital delta, with a point at the apex

deltoid, deltoid muscle, musculus deltoideus

(noun) a large triangular muscle covering the shoulder joint and serving to abduct and flex and extend and rotate the arm

Source: WordNet® 3.1

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Etymology

Noun

deltoid (plural deltoids)

(anatomy) The deltoid muscle, a triangular muscle on the human shoulder.

(anatomy) The deltoid ligament, a triangular ligament on the human ankle.

Synonyms

• (muscle): delt (slang)

Adjective

deltoid (not comparable)

In the shape of the upper case Greek letter delta Δ; triangular.

Of, or connected with the deltoid muscle

(botany, of leaves) Of a triangular or roughly triangular shape and attached to the stem via the side.

Source: Wiktionary

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Del"toid, a. Etym: [Gr. deltoeidh`s delta-shaped; de`lta the name of the letter ei^dos form: cf. F. deltoïde. See Delta.]

Definition: Shaped like the Greek Deltoid leaf (Bot.), a leaf in the form of a triangle with the stem inserted at the middle of the base.

– Deltoid muscle (Anat.), a triangular muscle in the shoulder which serves to move the arm directly upward.

Source: Webster’s Unabridged Dictionary 1913 Edition

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