co·pe·pod 
(kōpə-pŏd′)
(kōpə-pŏd′)n.
Any of numerous small marine or freshwater crustaceans of the subclass Copepoda, including parasitic and free-living forms.
[From New Latin Cōpēpoda, order name : Greek kōpē, oar; see kap- in the Appendix of Indo-European roots + New Latin -poda, -pod.]