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
Synonyms:

Other Word Forms of Sinus

Noun

Singular:
sinus
Plural:
sinuses

Origin 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

  • From Latin sinus.

    From Wiktionary

Sinus Sentence Examples

  • Here also the blood system has no communication with the sinus system of the coelom.

  • The aim is not self-destruction, but self-preservation; and yet the ethics of Manichaeism appears in point of fact as thoroughly ascetic. The Manichaean had, above all, to refrain from sensual enjoyment, shutting himself up against it by three seals - the signaculum oris, manus and sinus.

  • Veneridae.-Foot well developed; pallial sinus shallow or absent.

  • When it is slit open from in front a longitudinal ridge is seen in its posterior wall, which is called the verumontanum or crista urethra, and on each side of this is a longitudinal depression, the prostatic sinus, into which numerous ducts of the prostate open, though some of them open on to the antero-lateral surface.

  • The aorta is not independent as in Chitons, but is a sinus like the other channels of the circulation.

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Words Starting With

SSISIN

Words Ending With

SUSNUS

Unscrambles

sinus

Words Starting With S and Ending With S

Starts With S & Ends With SStarts With SI & Ends With SStarts With S & Ends With US

Word Length

5 Letter Words5 Letter Words Starting With S5 Letter Words Ending With S