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sphenoid

sphenoid

1 9.9
Butterfly-shaped bone at the skull base that forms part of the eye socket and holds the pituitary gland
  • noun
  • /ˈsfɛnɔɪd/
  • Specialized
translation icon : esfenoides
  • However, computed tomography (CT) of the sinuses showed an almost complete opacification of the larger right sphenoid sinus and a fluid level in the smaller left sphenoid sinus (figure A).
  • sphenoid sinus
  • sphenoid sinusitis

Examples

  • Sphenoid sinus endoscopy is performed when indicated by findings of polypoid disease on CT but not as a routine.

    Academic text (1994)
  • Figure 3. Contrast-enhanced CT (bone algorithm) demonstrates the mucoperiosteal thickening of the right sphenoid and frontal sinuses.

    Academic text (2006)
  • The left sphenoid sinus was also involved.

    Academic text (2004)
  • Seven of the 14 patients with sphenoid sinus involvement had isolated sphenoid disease.

    Academic text (2006)
  • Our patient presented with a 4-month history of vague headaches, which are often characteristic of chronic sphenoid sinusitis.

    Academic text (2006)
  • Clival or sphenoid lesions are usually more advanced on presentation and are typically treated with debulking and postoperative radiation.

    Academic text (2005)
  • Endoscopic examination 4 months postoperatively revealed a widely patent sphenoid ostium and no discharge. Isolated persistent sphenoid sinusitis is not uncommon.

    Academic text (2009)
  • Intraoperative endoscopic view of the right sphenoid sinus reveals the absence of purulent or necrotic debris in the sinus.

    Academic text (2006)
  • Preoperative contrast-enhanced CT demonstrates the extensive disease in the ethmoid, sphenoid, and maxillary sinuses, as well as in the cavernous sinus.

    Academic text (2008)
  • The sphenoid bone is crucial in forming the eye socket and supports the pituitary gland.

Synonyms

sphenoid bone
vssphenoid
  • Specialized
8.8

A butterfly-shaped bone at the base of the skull that helps form the eye socket and supports the brain

focuses on housing the pituitary gland inside a central skull cavity
os sphenoidale
vssphenoid
  • Specialized
9.9

A butterfly-shaped bone at the base of the skull that helps form the eye sockets and support the brain

emphasizes containing the pituitary gland rather than forming the skull floor

Compounds

sphenoid bone
  • Specialized
8.8

A butterfly-shaped bone at the base of the skull that helps form the eye socket and supports the brain

sphenoid fontanel
  • Specialized
9.9

The soft spot on the side of a baby's head where several skull bones meet

sphenoid fontanelle
  • Specialized
9.9

A soft spot on the side of a baby's head where skull bones meet

Surface Forms

sphenoid singular
sphenoids plural

Morphology

sphenoid = spheno + oid

The element 'spheno-' is a Greek combining form ('wedge') not a standalone English word and the term is specialized anatomical vocabulary, so learners cannot reliably derive the meaning from its parts.

Etymology

The word sphenoid comes from Greek parts sphen 'wedge' and -oid 'like' or 'shape', so it means 'wedge-shaped'. That's why the sphenoid bone is a wedge-shaped, butterfly-like bone at the base of the skull that helps form the eye socket and holds the pituitary gland.