sinus
sinus Lexical Profile
sinus Game Scores & Validity
• noun
A hollow cavity within a bone or tissue, especially one of the air-filled cavities in the cranial bones that connect with the nasal passages.
"The cold weather and high pollen count caused her sinuses to become congested and painful."
A wide channel or dilated passage inside the body containing venous blood or lymphatic fluid.
"The surgeon carefully avoided the dural venous sinus while operating near the top of the skull."
An abnormal, narrow tract or fistula in tissue that allows pus or fluid to drain from a deep infection to an epithelial surface.
"A chronic draining sinus formed near the site of the infected surgical wound."
A rounded recess, indentation, or notch between two lobes of a plant leaf or petal.
"You can identify this species of oak by the deep, rounded sinus between the lobes of its leaves."
• Rhymes for sinus
Word Origin & Etymology
Borrowed from Latin sinus, meaning a curve, fold, hollow, or bay, which was adopted by medieval anatomists to describe curved cavities and channels within the body.