from The American Heritage® Dictionary of the English Language, 4th Edition
- Wedge; wedge-shaped: sphenodon.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- sphenoid bone
from the GNU version of the Collaborative International Dictionary of English
- A combining form used in anatomy to indicate connection with, or relation to, the sphenoid bone; as in sphenomaxillary, sphenopalatine.
Greek sphēno-, from sphēn, wedge.(American Heritage® Dictionary of the English Language, Fourth Edition)