Definition of deltoids noun from the Oxford Advanced Learner's Dictionary



BrE BrE//ˈdeltɔɪdz//
; NAmE NAmE//ˈdeltɔɪdz//
(informal delts
BrE BrE//delts//
; NAmE NAmE//delts//
[plural] (anatomy) Body parts, Skeleton and muscles
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the thick triangle-shaped muscles that cover the shoulder joints See related entries: Body parts, Skeleton and muscles Word Originmid 18th cent.: from French deltoïde, or via modern Latin from Greek deltoeidēs.
See the Oxford Advanced American Dictionary entry: deltoids