1. A large triangular muscle covering the shoulder joint and serving to abduct and flex and extend and rotate the arm
   - deltoid muscle, musculus deltoideus

1. Triangular or suggesting a capital delta, with a point at the apex

Derived forms: deltoids

See also: simple, unsubdivided

Type of: skeletal muscle, striated muscle

Part of: rotator cuff

Encyclopedia: Deltoid

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