This round foramen, situated at the anterior base of the greater wing, passes rostrally in a horizontal plane. It transmits the maxillary branch of the trigeminal nerve into the facial region at the base of the orbit.

Foramen is the Latin term designating a hole-like opening. It derives from the Latin forare meaning to bore or perforate. Here, the opening is round as indicated by the Latin rotundum meaning round.

Foramen rond