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copepod co·pe·pod (kō'pə-pŏd')
Any of numerous minute marine and freshwater crustaceans of the subclass Copepoda, having an elongated body and a forked tail.
Any of various very small crustaceans of the subclass Copepoda, having an elongated body and a forked tail. Unlike most crustaceans, copepods lack a carapace over the back and do not have compound eyes. They are abundant in both salt and fresh water, and are an important food source for many water animals. Copepods include the water fleas.