'Deltoid muscle' definitions:
Definition of 'deltoid muscle'
From: WordNet
noun
A large triangular muscle covering the shoulder joint and serving to abduct and flex and extend and rotate the arm [syn: deltoid, deltoid muscle, musculus deltoideus]
Definition of 'Deltoid muscle'
From: GCIDE
- 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 in the form of a triangle with the stem inserted at the middle of the base.
- Deltoid muscle (Anat.), a large triangular muscle covering the shoulder joint, which serves to raise the arm directly upward. [1913 Webster]
- 2. of or pertaining to the deltoid muscle. [PJC]