sinus: значение и определения

Anatomy A dilated channel or receptacle containing chiefly venous blood.

A depression or cavity formed by a bending or curving.

Anatomy Any of various air-filled cavities in the bones of the skull, especially one communicating with the nostrils.

Pathology A fistula leading from a pus-filled cavity.

Botany A recess or indentation between lobes of a leaf or corolla.