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deltoid muscle

資料來源 : Webster's Revised Unabridged Dictionary (1913)

Deltoid \Del"toid\, a. [Gr. deltoeidh`s delta- shaped; de`lta
   the name of the letter [Delta] + e'i^dos form: cf. F.
   delto["i]de. See {Delta}.]
   Shaped like the Greek [Delta] (delta); delta-shaped;
   triangular.

   {Deltoid leaf} (Bot.), a leaf in the form of a triangle with
      the stem inserted at the middle of the base.

   {Deltoid muscle} (Anat.), a triangular muscle in the shoulder
      which serves to move the arm directly upward.

資料來源 : WordNet®

deltoid muscle
     n : a large triangular muscle covering the shoulder joint and
         serving to abduct and flex and extend and rotate the arm
         [syn: {deltoid}, {musculus deltoideus}]
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