noun. A long narrow opening; a crack or cleft.

noun. The process of splitting or separating; division.

noun. A separation into subgroups or factions; a schism.

noun. A normal groove or furrow, as in the liver or brain, that divides an organ into lobes or parts.

noun. A break in the skin, usually where it joins a mucous membrane, producing a cracklike sore or ulcer.

intransitive & transitive verb. To form a crack or cleft or cause a crack or cleft in.

To cleave; split; divide; crack or fracture.

To crack; cleave; split open.

noun. A longitudinal depression on the under surface of the liver.

noun. A narrow longitudinal opening or groove; a cleft, crack, or chink; a line of separation in any substance produced by parting or cleavage: as, a fissure in the earth or in a rock.

noun. In surgery and anatomy, any solution of continuity in a bone, membrane, or muscle, or a natural division or groove between adjoining parts of like substance; a fissura: a sulcus: as, the longitudinal fissure of the brain, separating the hemispheres.

noun. In entomology: A deep, sharp longitudinal depression of a surface.

noun. A very deep angular notch in a margin, almost dividing the part or organ.

noun. In botany, the opening between segments of a cleft leaf or other organ; a slit formed by the dehiscence of an anther or a capsule.

noun. In heraldry, a bearing resembling the bend sinister, but having one fourth the width of the bend, and capable of being borne on any part of the shield, sometimes in connection with others, sometimes with a bend sinister, a scarpe, or the like. Also called staff.

noun. In pathology, a crack-like sore or ulcer: as, an anal fissure.

noun. See the adjectives.

transitive verb. To cleave; to divide; to crack or fracture.

noun. A narrow opening, made by the parting of any substance; a cleft.

noun. 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.

noun. a spiral needle for catching together the gaping lips of wounds.

noun. the furrow separating the frontal from the parietal lobe in the cerebrum.

noun. a deep cerebral fissure separating the frontal from the temporal lobe. See Illust. under Brain.

noun. a crack in the earth's surface filled with mineral matter.

noun. a crack or opening, as in a rock

verb. To split forming fissures.

noun. a long narrow opening

noun. a long narrow depression in a surface

verb. break into fissures or fine cracks

noun. (anatomy) a long narrow slit or groove that divides an organ into lobes

"The spinal cord is divided in front through the middle nearly as far as its center, by a deep fissure, called the _anterior fissure_, and behind, in a similar manner, by the posterior _fissure_."

adoccipital fissure  amygdaline fissure  ansate fissure  anterotemporal fissure  auricular fissure  

crack  depression  impression  imprint  

Fischer  Fisher  disher  fisher  swisher  

cavern  cavity  chasm  cleave  cleft  

abysm  abyss  amputate  arachnoid  arbor vitae  

fissured  fissures  fissuring