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 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 of Sylvius — fissure of Syl·vi·us sil vē əs n SYLVIAN FISSURE …   Medical dictionary

  • fissure of Sylvius — /sil vee euhs/. See lateral fissure. [named after Franciscus Sylvius (Latinization of Franz de la Boë, d.1672), German anatomist] * * * …   Universalium

  • fissure of Sylvius — noun the deepest and most prominent of the cortical fissures; separates the frontal lobes and temporal lobes in both hemispheres • Syn: ↑Sylvian fissure, ↑lateral cerebral sulcus, ↑sulcus lateralis cerebri • Hypernyms: ↑sulcus • Part Holonyms: ↑ …   Useful english dictionary

  • 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 Syl|vi|us — «SIHL vee uhs», the largest and deepest groove of each hemisphere of the brain, separating the frontal and parietal lobes from the temporal lobe; lateral fissure. ╂[< Franciscus Sylvius, 1614 1672, a German anatomist] …   Useful english dictionary

  • angle of Sylvius — the angle formed by junction of the lateral sulcus (fissure of Sylvius) and a line perpendicular to the horizontal plane tangential to the highest point of the hemisphere …   Medical 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 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 …   The Collaborative International Dictionary of English

  • 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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