1. sphenoid

noun. butterfly-shaped bone at the base of the skull.


  • os sphenoidale
  • os
  • crotaphion
  • bone
  • sphenoid bone
  • skull


  • boneless

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Example sentences of the word sphenoid

1. Adjective
The cheekbone connects to four other facial bones: the maxilla, the temporal bone, the frontal bone and the sphenoid bone.

2. Noun, singular or mass
The temporal bone abuts the head's temples, and the sphenoid bone, which is named partly related to the word "sphere," is located behind the eye.