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
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.
• 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
28 April 2024
(adjective) of or relating to an inheritable character that is controlled by several genes at once; of or related to or determined by polygenes
Coffee dates back to the 9th century. Goat herders in Ethiopia noticed their goats seem to be “dancing” after eating berries from a particular shrub. They reported it to the local monastery, and a monk made a drink out of it. The monk found out he felt energized and kept him awake at night. That’s how the first coffee drink was born.