fissure

(redirected from Inferior orbital fissure)
Also found in: Dictionary, Thesaurus, Medical, Wikipedia.

fissure

1. Anatomy a narrow split or groove that divides an organ such as the brain, lung, or liver into lobes
2. a small unnatural crack in the skin or mucous membrane, as between the toes or at the anus
3. a minute crack in the surface of a tooth, caused by imperfect joining of enamel during development

fissure

[′fish·ər]
(geology)
A high, narrow cave passageway.
An extensive crack in a rock.
(metallurgy)
A small cracklike discontinuity with a slight opening or displacement of the fracture surfaces.
References in periodicals archive ?
On the other hand, the maxillary nerve groove is located in the superior and medial edge of maxillary tuberosity at the inferior margin of the inferior orbital fissure with an average distance from sphenoidal tubercle of 7.6 mm, with a maximum value of 11.51 mm and a minimum value of 4.0 mm.
He found a bilateral groove in a single skull like that described by Low extending from foramen meningoorbitale to the inferior orbital fissure. There was one case of similar unilateral groove.
It was directed outwards, whereas in the posterior part of the orbital floor (between the inferior orbital fissure and the optic nerve canal) the area of relocation extended as far as 0.5 mm and was directed towards the inside of the orbit, "the recurring wave" (white arrow, Figure 3).

Full browser ?