Anatomy
sphenoid bone Audio
sphe·noid [ sfee-noid ]
Subclass of:
Bone structure of cranium
Definitions related to sphenoid bone:
  • An irregular unpaired bone situated at the SKULL BASE and wedged between the frontal, temporal, and occipital bones (FRONTAL BONE; TEMPORAL BONE; occipital bone). Sphenoid bone consists of a median body and three pairs of processes resembling a bat with spread wings. The body is hollowed out in its inferior to form two large cavities (SPHENOID SINUS).
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2021
  • The butterfly-shaped bone located at the base of the skull that helps to form the orbit of the eye.
    NCI Thesaurus
    U.S. National Cancer Institute, 2021
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