n. (Zool.) One of the Foraminifera. [ 1913 Webster ]

‖n. pl. [ NL., fr. L. foramen, -aminis, a foramen + ferre to bear. ] (Zool.) An extensive order of rhizopods which generally have a chambered calcareous shell formed by several united zooids. Many of them have perforated walls, whence the name. Some species are covered with sand. See Rhizophoda. [ 1913 Webster ]

a. 1. Having small openings, or foramina. [ 1913 Webster ]

2. Pertaining to, or composed of, Foraminifera; as, foraminiferous mud. [ 1913 Webster ]