Fissure vs. Foramen

Fissurenoun

A crack or opening, as in a rock.

Foramennoun

(skeleton) An opening, an orifice, or a short passage, especially in a bone.

‘The skull contains a number of foramina through which arteries, veins, nerves, and other structures enter and exit.’;

Fissurenoun

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

Foramennoun

A small opening, perforation, or orifice; a fenestra.

Fissureverb

To split, forming fissures.

Foramennoun

a natural opening or perforation through a bone or a membranous structure

Fissurenoun

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

Foramen

In anatomy and osteology, a foramen (; plural foramina, or foramens ) is an open hole that is present in extant or extinct amniotes. Foramina inside the body of animals typically allow muscles, nerves, arteries, veins, or other structures to connect one part of the body with another.

Fissureverb

To cleave; to divide; to crack or fracture.

Fissurenoun

a long narrow depression in a surface

Fissurenoun

a long narrow opening

Fissurenoun

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

Fissureverb

break into fissures or fine cracks

Fissure

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.