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deltoid - 7 dictionary results

del⋅toid

  [del-toid]
Use deltoid in a Sentence
–noun
1. Anatomy. a large, triangular muscle covering the joint of the shoulder, the action of which raises the arm away from the side of the body.
–adjective
2. Anatomy. pertaining to or involving the deltoid.
3. Also, deltoidal. in the shape of a Greek capital delta (Δ); triangular.
Origin:
1675–85; < Gk deltoeids delta-shaped, equiv. to délt(a) delta + -oeidēs -oid
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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del·toid   (děl'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 deltoīdēs, from Greek deltoeidēs, triangular : delta, delta; see delta + -oeidēs, -oid.]
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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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.] Shaped like the Greek [Delta] (delta); delta-shaped; triangular.

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.
Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc.
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Main Entry: 1del·toid
Pronunciation: 'del-"toid
Function: noun
: a large triangular muscle that covers the shoulder joint, serves to raisethe 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 shaftof the humerus called also deltoid muscle; —see DELTOID TUBEROSITY

Main Entry: 2deltoid
Function: adjective
: relating to, associated with, or supplying the deltoid deltoid branch of the thoracoacromialartery> <deltoid fascia>
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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deltoid del·toid (děl'toid')
adj.

  1. Of or relating to the deltoid muscle.
  2. Triangular in shape or outline.
n.
The deltoid muscle.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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deltoid

large, triangular muscle that covers the shoulder and serves mainly to raise the arm laterally. The deltoid, as it is commonly known, originates on the outer front third of the clavicle (collarbone) and the lower margin of the spine of the scapula (shoulder blade). Its fibres unite to form a thick tendon that inserts at the deltoid tuberosity, a rough spot above the middle of the outer surface of the humerus (upper arm bone).

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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