from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. sphenoid
- adj. Shaped like a wedge
from the GNU version of the Collaborative International Dictionary of English
- adj. Sphenoid.
- adj. Pertaining to, or resembling, a sphenoid.
from The Century Dictionary and Cyclopedia
- Same as sphenoid.
- In birds, a rostrate part of the skull which appears to be chiefly, if not entirely, developed from the parasphenoid.
Sorry, no etymologies found.
I went to the doctor and he ran an 8-inch trocar, like a giant hypodermic needle, up my nose, through the bone and into my sphenoidal sinus.
Mr. Bowlby made a _post-mortem_ examination, and found considerable pulping of the tip of the right frontal and left temporo-sphenoidal lobes, and a thick layer of hæmorrhage extending over the whole base of the brain.
The sphenoidal sinus near F opens into the upper meatus.
It rests upon the clivus of the sphenoidal bone, and is limited above and below by well-defined borders.
According to Cleland, each sphenoidal concha is ossified from four centers.
The body, more or less cubical in shape, is hollowed out in its interior to form two large cavities, the sphenoidal air sinuses, which are separated from each other by a septum.
The inferior surface presents, in the middle line, a triangular spine, the sphenoidal rostrum, which is continuous with the sphenoidal crest on the anterior surface, and is received in a deep fissure between the alæ of the vomer.
A small portion of the sphenoidal concha sometimes enters into the formation of the medial wall of the orbit, between the lamina papyracea of the ethmoid in front, the orbital plate of the palatine below, and the frontal bone above.
On the under surface of the vaginal process is a furrow, which is converted into a canal by the sphenoidal process of the palatine bone, for the transmission of the pharyngeal branch of the internal maxillary artery and the pharyngeal nerve from the sphenopalatine ganglion.
On either side of the crest is an irregular opening leading into the corresponding sphenoidal air sinus.