Deltoid
The muscle, roughly triangular in shape, that stretches from the clavicle (collarbone) to the humerus, the upper bone of the arm. It is contracted to move the arm away from the side of the body.
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Resembling the Greek letter delta (Δ); triangular. [G. deltoeides, shaped like the letter delta]

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del·toid 'del-.tȯid n a large triangular muscle that covers the shoulder joint, serves to raise the arm laterally, arises from the upper anterior part of the outer third of the clavicle and from the acromion and spine of the scapula, and is inserted into the outer side of the middle of the shaft of the humerus called also deltoid muscle see DELTOID TUBEROSITY
deltoid adj relating to, associated with, or supplying the deltoid <the \deltoid branch of the thoracoacromial artery>

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n.
a thick triangular muscle that covers the shoulder joint. It is responsible for raising the arm away from the side of the body.

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del·toid (delґtoid) [L. deltoides triangular] triangular in outline, as the deltoid muscle.

Medical dictionary. 2011.

Look at other dictionaries:

  • Deltoid — (delta shaped) can refer to: The deltoid muscle, a muscle in the shoulder Kite (geometry), also known as a deltoid, a type of quadrilateral A deltoid curve, a three sided hypocycloid A leaf shape The deltoid tuberosity, a part of the humerus See… …   Wikipedia

  • Deltoid — Del toid, a. [Gr. deltoeidh s delta shaped; de lta the name of the letter [Delta] + e i^dos form: cf. F. delto[ i]de. See {Delta}.] 1. Shaped like the Greek [Delta] (delta); delta shaped; triangular. [1913 Webster] {Deltoid leaf} (Bot.), a leaf… …   The Collaborative International Dictionary of English

  • deltoid — DELTOÍD, Ă, deltoizi, de, adj., s.m. 1. adj. În formă de triunghi. 2. s.m. Muşchi al articulaţiei umărului, în forma literei delta, fixat pe omoplat, claviculă şi capătul humerusului, care determină rotaţia internă şi externă a braţului. – Din fr …   Dicționar Român

  • Deltoid — Del toid, n. [see {deltoid}, a.] the {deltoid muscle}. [PJC] …   The Collaborative International Dictionary of English

  • deltoid — 1741, in deltoid muscle, so called for its shape, from Gk. deltoeides triangular, lit. shaped like the letter delta; see DELTA (Cf. delta) + OID (Cf. oid) …   Etymology dictionary

  • deltoid — [del′toid΄] adj. [Gr deltoeidēs: see DELTA & OID] 1. shaped like a delta; triangular: see LEAF 2. designating or of a large, triangular muscle which covers the shoulder and raises the arm away from the side n. the deltoid muscle …   English World dictionary

  • Deltoīd — (Geom.), ein Trapezoid, welches zwei Paare gleicher Seiten hat …   Pierer's Universal-Lexikon

  • Deltoīd — Deltoīd, ebenes Viereck, gebildet von zwei gleichschenkeligen Dreiecken, die mit der Grundlinie aneinander gelegt sind. S. Figur …   Meyers Großes Konversations-Lexikon

  • Deltoid — Deltoid, ein Viereck, das in bezug auf eine Diagonale symmetrisch ist. Die Diagonalen flehen aufeinander senkrecht …   Lexikon der gesamten Technik

  • Deltoid — Deltoīd, Viereck, bestehend aus zwei gleichschenkligen Dreiecken a c b und a d b mit gemeinsamer Basis a b, aber ungleicher Höhe [Abb. 405] …   Kleines Konversations-Lexikon

  • deltòīd — m 〈G deltoída〉 mat. četverokut s međusobno okomitim dijagonalama različite dužine od kojih ga jedna dijeli na dva jednakokračna trokuta, a druga na dva sukladna trokuta …   Veliki rječnik hrvatskoga jezika

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