\pɹətɹˈaktɪv], \pɹətɹˈaktɪv], \p_ɹ_ə_t_ɹ_ˈa_k_t_ɪ_v]\
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- A genus of small Foraminifera, which live abundantly at or near the surface sea. Their dead shells, falling to bottom, make up large part soft mud, generally found in depths below 3,000 feet, and called globigerina ooze. See Illust. Foraminifera. glob-i-je-r[=i]'na, n. a genus typical of GlobigerinidÃ¦, pelagic family foraminifers.