Sinus Definition
sīnəs
sinuses
noun
sinuses
A bend or curve.
Webster's New World
Any cavity or hollow formed by a bending or curving.
Webster's New World
A dilated channel or receptacle containing chiefly venous blood.
American Heritage Medicine
Any of various cavities, hollows, or passages.
Webster's New World
A rounded depression between two consecutive lobes, as of a leaf.
Webster's New World
Other Word Forms of Sinus
Noun
Singular:
sinus
Plural:
sinusesOrigin of Sinus
Middle English hollow in the body from Medieval Latin from Latin curve, hollow
From American Heritage Dictionary of the English Language, 5th Edition
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From Latin sinus.
From Wiktionary
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