Foramen

fo-rā′men, n. a small opening:— pl. Foram′ina .— adjs. Foram′inated , Foram′inous , pierced with small holes: porous.— n.pl. For am in if′era , an order of Rhizopod a , furnished with a shell or test, usually perforated by pores ( foramina ).— n. For am in′ifer , one of such.— adjs. For am in if′eral , For am in if′erous .— Forāmen magnum , the great hole in the occipital bone for the pa age of the medulla oblong at a and its membranes. [L.,— forāre , to pierce.]