del·toid (d l toid )n. A thick triangular muscle covering the shoulder joint, used to raise the arm from the side. adj. 1. Triangular. 2. Of or relating to the deltoid. [New Latin delto  d s, from Greek deltoeids, triangular : delta, delta; see delta + -oeids, -oid.] |
deltoid [ˈdɛltɔɪd]
n
(Life Sciences & Allied Applications / Anatomy) the thick muscle forming the rounded contour of the outer edge of the shoulder and acting to raise the arm
adj
shaped like a Greek capital delta, Δ; triangular
[from Greek deltoeidēs triangular, from delta]
ThesaurusLegend: Synonyms Related Words Antonyms
| Noun | 1. |  deltoid - a large triangular muscle covering the shoulder joint and serving to abduct and flex and extend and rotate the armskeletal muscle, striated muscle - a muscle that is connected at either or both ends to a bone and so move parts of the skeleton; a muscle that is characterized by transverse stripes rotator cuff - a supporting structure of the shoulder consisting of the muscles and tendons that attach the arm to the shoulder joint and enable the arm to move |
| Adj. | 1. | deltoid - triangular or suggesting a capital delta, with a point at the apex unsubdivided, simple - (botany) of leaf shapes; of leaves having no divisions or subdivisions |
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