Foraminifer is a noun referring to a single celled planktonic animal which has got a perforated chalky shell. Most of these kinds are marine, and after they die, their shells form the thick sediments on the ocean floor.
1 Additional Answer
Ask.com Answer for:
what is the definition of foraminifer
NOUN [PLURAL FOR·A·MIN·I·FERS, FO·RAM·I·NIF·ER·A]
any chiefly marine protozoan of the sarcodinian order Foraminifera, typically having a linear, spiral, or concentric shell perforated by small holes or pores through which pseudopodia extend.