AskDefine | Define sphenoid

Dictionary Definition

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

User Contributed Dictionary



  1. Wedge-shaped.



Derived terms

Extensive Definition

The sphenoid bone (from Greek sphenoeides, "wedgelike") is a bone situated at the base of the skull in front of the temporals and basilar part of the occipital bone.
The sphenoid bone somewhat resembles a butterfly or bat with its wings extended.


It is divided into the following parts:
Two sphenoidal conchae are situated at the anterior and posterior part of the body.

Named features

Various other named features of the sphenoid bone exist:

Additional images

Image:Illu facial bones.jpg|Facial bones.

External links

  • - "Lateral view of skull."
sphenoid in Arabic: عظم وتدي
sphenoid in Catalan: Esfenoide
sphenoid in Danish: Kileben
sphenoid in German: Keilbein
sphenoid in Spanish: Hueso esfenoides
sphenoid in French: Os sphénoïde
sphenoid in Galician: Esfenoide
sphenoid in Italian: Osso sfenoide
sphenoid in Latin: Os sphenoidale
sphenoid in Latvian: Spārnkauls
sphenoid in Lithuanian: Pleištakaulis
sphenoid in Hungarian: Ékcsont
sphenoid in Dutch: Wiggenbeen
sphenoid in Japanese: 蝶形骨
sphenoid in Norwegian: Kilebeinet
sphenoid in Polish: Kość klinowa
sphenoid in Portuguese: Osso esfenóide
sphenoid in Slovak: Klinová kosť
sphenoid in Slovenian: Zagozdnica
sphenoid in Finnish: Kitaluu
sphenoid in Thai: กระดูกสฟีนอยด์
sphenoid in Ukrainian: Клиноподібна кістка
sphenoid in Chinese: 蝶骨
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