1. containing or characterized by small openings, pores, or holes
Usage: technical; scientific
2. of, relating to, or containing foraminifera (single-celled marine organisms with shells containing small chambers)
Usage: geology; paleontology

Examples

• The foraminiferous limestone contained countless tiny shells from ancient marine life.
• Geologists studied the foraminiferous deposits to understand the ocean's history.
• The rock sample showed a foraminiferous structure with numerous small cavities.
• Foraminiferous sediments are valuable indicators of past environmental conditions.
• The fossil record includes many foraminiferous layers from the Cretaceous period.