Definify.com
Webster 1913 Edition
Fissure
Fis′sure
,Noun.
[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 rockCerebral 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.
Fis′sure
,Verb.
T.
To cleave; to divide; to crack or fracture.
Webster 1828 Edition
Fissure
FIS'SURE
,Noun.
1.
A cleft; a narrow chasm made by the parting of any substance; a longitudinal opening; as the fissure of a rock.2.
In surgery, a crack or slit in a bone, either transversely or longitudinally, by means of external force.3.
In anatomy, a deep, narrow sulcus, or depression, dividing the anterior and middle lobes of the cerebrum on each side.FIS'SURE
,Verb.
T.