3 definitions found
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Fissure \Fis"sure\, v. t.
To cleave; to divide; to crack or fracture.
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
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.
From WordNet r 1.6 [wn]:
fissure
n 1: a long narrow depression in a surface [syn: {crevice}, {cranny},
{crack}, {chap}]
2: a long narrow opening [syn: {crack}, {cleft}, {crevice}, {scissure}]
3: (anatomy) a long narrow slit or groove that divides an organ
into lobes
v : break into fissures or fine cracks
more about fissure
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