Definition of foraminifer in English:

foraminifer

noun

Zoology
  • A single-celled planktonic animal with a perforated chalky shell through which slender protrusions of protoplasm extend. Most kinds are marine, and when they die thick ocean-floor sediments are formed from their shells.

    See also globigerina
    • ‘These taxa consist of a broad array of organisms, including foraminifers, corals, bryozoans, mollusks, echinoderms, and fish.’
    • ‘The Gracisce packstones contain a rich foraminiferal assemblage, composed of larger and planktonic foraminifera along with authigenic glauconite.’
    • ‘It has been estimated that a large 150 micron wide shell of a foraminifer may take as long as 10 days to sink to the bottom of the ocean, whereas smaller ones would probably take much longer.’
    • ‘In a Swedish fjord sediment where G. pseudospinescens is the dominant foraminifer, the intracellular nitrate pool in this species accounted for 20% of the large, cell-bound, nitrate pool present in an oxygen-free zone.’
    • ‘Far from land in the deep sea, where little material comes from erosion of the land, the bottom sediment is made up mainly of shells of planktonic organisms, especially foraminifera.’

Origin

Mid 19th century: from Latin foramen, foramin- (see foramen) + -fer bearing (from ferre to bear).

Pronunciation:

foraminifer

/ˌfɒrəˈmɪnɪfə/