The Collaborative International Dictionary
Foraminiferous
Foraminiferous \Fo*ram`i*nif"er*ous\, a.
Having small openings, or foramina.
Pertaining to, or composed of, Foraminifera; as, foraminiferous mud.
Wiktionary
foraminiferous
a. 1 Having small openings, or foramina. 2 Pertaining to, or composed of, Foraminifera.