deltoid

deltoid
[ˈdɛltɔɪd]
adjective
  1. (technical)triangular
    (技)三角形的
    a tree with large deltoid leaves.
    大三角叶的树。
    ■denoting a thick triangular muscle covering the shoulder joint and used for raising the arm away from the body
    三角肌的
noun
  1. a deltoid muscle
    三角肌
    ■each of the three parts of a deltoid muscle, attached at the front, side, and rear of the shoulder
    三角肌各角肌肉
    the anterior deltoid.
    前三角肌。
语源
  1. mid 18th cent.: from French deltoïde, or via modern Latin from Greek deltoeidēs
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