What is the meaning of Foraminifera?

Synonym of foraminifer (any of a large group of aquatic amoeboid protists of the subphylum Foraminifera, characterized by streaming granular ectoplasm that among other things is used for catching food, often with a calcareous shell with many holes through which pseudopodia protrude)

plural of foraminiferon

plural of foraminiferum

Source: wiktionary.org