The Collaborative International 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.
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.
WordNet
n. a brain fissure extending upward on the lateral surface of both hemispheres; separates the frontal and parietal lobes [syn: Rolando's fissure, central sulcus, sulcus centralis]
Usage examples of "fissure of rolando".
It is sometimes called the fissure of Rolando, after an 18th-century Italian anatomist, Luigi Rolando, who was the first to describe it carefully.
There was an unknown cortex superimposed on the forebrain and extending as far back as the fissure of Rolando.
Where might you find the pons, the arcuate fasciculus, Wernicke's area and the fissure of Rolando?