1. A large group of single-celled marine organisms with shells or tests, typically found in ocean sediments and used in paleontology and geology.
Usage: plural: foraminifera or foraminifers; scientific/technical term; commonly abbreviated as 'forams'

Examples

• Foraminifera are abundant in deep-sea sediments and provide valuable information about past ocean conditions.
• Paleontologists study foraminifera to understand the climate history of Earth.
• The shells of foraminifera accumulate on the ocean floor over millions of years.
• Foraminifera are used as index fossils to date rock layers in the geological record.
• These microscopic organisms are essential indicators of water temperature and salinity in marine environments.