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deltoids

noun
🔊/ˈdeltɔɪdz/
🔊/ˈdeltɔɪdz/
(also informal delts
🔊/delts/
🔊/delts/
)
[plural] (anatomy解剖学)
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  1. the thick muscles that are triangular in shape and cover the shoulder joints三角肌（覆盖于肩关节）Topics Bodyc2
    Word Originmid 18th cent.: from French deltoïde, or via modern Latin from Greek deltoeidēs.