Beneath the deltoid muscle; denoting a bursa. ... (05 Mar 2000) ... 
Type: Term Pronunciation: sŭb-del′toyd Definitions: 1. Beneath the deltoid muscle; denoting a bursa.
Subdeltoid: Beneath the deltoid, the large muscle that stretches from the clavicle (collarbone) to the humerus (the long bone in the upper arm) and so covers the shoulder.
subdeltoid 1. Beneath the deltoid, the large muscle that stretches from the clavicle (collarbone) to the humerus (the long bone in the upper arm) and so covers the shoulder. 2. Beneath the deltoid muscle; denoting a bursa (fibrous sac, pouch, or cavity).