Definition of: sinus

(sī′nəs) noun
1. A recess formed by a bending or folding; an opening or cavity.
2. Anat. a An air cavity in one of the cranial bones communicating with the nostrils: the frontal sinus. b A channel or receptacle for venous blood; also, a dilated part of a blood vessel.
3. Pathol. Any narrow opening leading to an abscess.
4. Bot. A recess or rounded curve between two projecting lobes or teeth of a leaf. [<L. Doublet of SINE.]

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Statistical data

"sinus" has the frequency of use of 0.0004% on city-data.com forum

"sinus" has the frequency of use of 0.0002% on en.wikipedia.org.

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Definition of: sinus

'sinus' used in million biggest domains list by Alexa.com:

'sinus' used in other domains:

Statistical data

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