Fissure vein
Fissure Fis"sure, n. [L. fissura, fr. findere, fissum, to cleave, split; akin to E. bite: cf. F. fissure.] A narrow opening, made by the parting of any substance; a cleft; as, the fissure of a rock. [1913 Webster]

{Cerebral fissures} (Anat.), the furrows or clefts by which the surface of the cerebrum is divided; esp., the furrows first formed by the infolding of the whole wall of the cerebrum.

{Fissure needle} (Surg.), a spiral needle for catching together the gaping lips of wounds. --Knight.

{Fissure of rolando} (Anat.), the furrow separating the frontal from the parietal lobe in the cerebrum.

{Fissure of Sylvius} (Anat.), a deep cerebral fissure separating the frontal from the temporal lobe. See Illust. under {Brain}.

{Fissure vein} (Mining), a crack in the earth's surface filled with mineral matter. --Raymond. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • fissure vein — noun : a crack in the earth s crust filled with minerals deposited from aqueous solution including sometimes such adjacent rock as has been sufficiently mineralized to be mined as ore …   Useful english dictionary

  • Fissure — Fis sure, n. [L. fissura, fr. findere, fissum, to cleave, split; akin to E. bite: cf. F. fissure.] A narrow opening, made by the parting of any substance; a cleft; as, the fissure of a rock. [1913 Webster] {Cerebral fissures} (Anat.), the furrows …   The Collaborative International Dictionary of English

  • Fissure needle — Fissure Fis sure, n. [L. fissura, fr. findere, fissum, to cleave, split; akin to E. bite: cf. F. fissure.] A narrow opening, made by the parting of any substance; a cleft; as, the fissure of a rock. [1913 Webster] {Cerebral fissures} (Anat.), the …   The Collaborative International Dictionary of English

  • Fissure of rolando — Fissure Fis sure, n. [L. fissura, fr. findere, fissum, to cleave, split; akin to E. bite: cf. F. fissure.] A narrow opening, made by the parting of any substance; a cleft; as, the fissure of a rock. [1913 Webster] {Cerebral fissures} (Anat.), the …   The Collaborative International Dictionary of English

  • Fissure of Sylvius — Fissure Fis sure, n. [L. fissura, fr. findere, fissum, to cleave, split; akin to E. bite: cf. F. fissure.] A narrow opening, made by the parting of any substance; a cleft; as, the fissure of a rock. [1913 Webster] {Cerebral fissures} (Anat.), the …   The Collaborative International Dictionary of English

  • Vein — Vein, n. [OE. veine, F. veine, L. vena.] 1. (Anat.) One of the vessels which carry blood, either venous or arterial, to the heart. See {Artery}, 2. [1913 Webster] 2. (Bot.) One of the similar branches of the framework of a leaf. [1913 Webster] 3 …   The Collaborative International Dictionary of English

  • vein — [vān] n. [ME veine < OFr < L vena] 1. a) any blood vessel that carries blood from some part of the body back toward the heart b) loosely any blood vessel: cf. ARTERY, CAPILLARY 2. any of the riblike supports strengthening the membranous… …   English World dictionary

  • vein — veinal, adj. veinless, adj. veinlike, adj. /vayn/, n. 1. one of the system of branching vessels or tubes conveying blood from various parts of the body to the heart. 2. (loosely) any blood vessel. 3. one of the riblike thickenings that form the… …   Universalium

  • Vein — A blood vessel that carries blood low in oxygen content from the body back to the heart. The deoxygenated form of hemoglobin (deoxyhemoglobin) in venous blood makes it appear dark. Veins are part of the afferent wing of the circulatory system… …   Medical dictionary

  • Fissure — A cleft or groove. A fissure can be normal or abnormal. A fissure in the cerebral cortex is a normal feature. It is a deep fold that involves the entire thickness of the brain wall. A fissure in the anus is distinctly abnormal. It is a painful… …   Medical dictionary

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