SINUS

sinus

(noun) any of various air-filled cavities especially in the bones of the skull

fistula, sinus

(noun) an abnormal passage leading from a suppurating cavity to the body surface

Source: WordNet® 3.1

Etymology

Noun

sinus (plural sinuses)

(anatomy) A pouch or cavity in any organ or tissue, especially the paranasal sinus.

(anatomy) A channel for transmitting venous blood.

(botany) A notch or depression between two lobes or teeth in the margin of an organ.

(pathology) An abnormal cavity or passage such as a fistula, caused by the destruction of tissue.

A bay of the sea; a recess in the shore.

Anagrams

• Sunis, nisus

Source: Wiktionary

Si"nus, n.; pl. L. Sinus, E. Sinuses. Etym: [L., a bent surface, a curve, the folds or bosom of a garment, etc., a bay. Cf. Sine, n.]

1. An opening; a hollow; a bending.

2. A bay of the sea; a recess in the shore.

3. (Anat. & Zoöl.)

Definition: A cavity; a depression. Specifically: (a) A cavity in a bone or other part, either closed or with a narrow opening. (b) A dilated vessel or canal.

4. (Med.)

Definition: A narrow, elongated cavity, in which pus is collected; an elongated abscess with only a small orifice.

5. (Bot.)

Definition: A depression between adjoining lobes.

Note: A sinus may be rounded, as in the leaf of the white oak, or acute, as in that of the red maple. Pallial sinus. (Zoöl.) See under Pallial.

– Sinus venosus. Etym: [L., venous dilatation.] (Anat.) (a) The main part of the cavity of the right auricle of the heart in the higher vertebrates. (b) In the lower vertebrates, a distinct chamber of the heart formed by the union of the large systematic veins and opening into the auricle.

Source: Webster’s Unabridged Dictionary 1913 Edition

SINUS

Etymology

Noun

Anagrams

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