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5 definitions found

From: DICT.TW English-Chinese Dictionary 英漢字典

 sphe·noid /ˈsfiˌnɔɪd/
 (a.)楔狀的楔狀骨,蝴蝶骨

From: DICT.TW English-Chinese Medical Dictionary 英漢醫學字典

 sphe·noid /sfɪˈnɔɪdḷ/ 形容詞
 楔狀的,蝶骨,蝶骨的

From: Webster's Revised Unabridged Dictionary (1913)

 Sphe·noid a.
 1. Wedge-shaped; as, a sphenoid crystal.
 2. Anat. Of or pertaining to the sphenoid bone.
 Sphenoid bone Anat., an irregularly shaped bone in front of the occipital in the base of the skull of the higher vertebrates. It is composed of several fetal bones which become united the adult. See Alisphenoid, Basisphenoid, Orbitosphenoid, Presphenoid.

From: Webster's Revised Unabridged Dictionary (1913)

 Sphe·noid n.
 1. Crystallog. A wedge-shaped crystal bounded by four equal isosceles triangles. It is the hemihedral form of a square pyramid.
 2. Anat. The sphenoid bone.
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From: WordNet (r) 2.0

 sphenoid
      n : butterfly-shaped bone at the base of the skull [syn: sphenoid
           bone, os sphenoidale]