Fissure vs. Crevasse

A crack or opening, as in a rock.

(anatomy) A groove, deep furrow, elongated cleft, or tear; a sulcus.

To split, forming fissures.

A narrow opening, made by the parting of any substance; a cleft; as, the fissure of a rock.

To cleave; to divide; to crack or fracture.

a long narrow depression in a surface

a long narrow opening

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

break into fissures or fine cracks

In anatomy, a fissure (Latin fissura, plural fissurae) is a groove, natural division, deep furrow, elongated cleft, or tear in various parts of the body. It is also generally called a sulcus, but this term can also reffer specifically to the analagous brain structure.

A crack or fissure in a glacier or snowfield; a chasm.

(US) A breach in a canal or river bank.

(figuratively) A discontinuity or “gap” between the accounted variables and an observed outcome.

(intransitive) To form crevasses.

(transitive) To fissure with crevasses.

A deep crevice or fissure, as in embankment; one of the clefts or fissure by which the mass of a glacier is divided.

A breach in the levee or embankment of a river, caused by the pressure of the water, as on the lower Mississippi.

a deep fissure

A crevasse is a deep crack, crevice or fissure found in an ice sheet or glacier, or earth. Crevasses form as a result of the movement and resulting stress associated with the shear stress generated when two semi-rigid pieces above a plastic substrate have different rates of movement.