copepod, copepod crustacean - minute marine or freshwater crustaceans usually having six pairs of limbs on the thorax; some abundant in plankton and others parasitic on fish mussel shrimp, ostracod, seed shrimp - tiny marine and freshwater crustaceans with a shrimp-like body enclosed in a bivalve shell
time and a half(noun) a rate of pay that is 1.5 times the regular rate; for overtime work.
A trimester (Latin: trimestris, lit. 'of three months') divides the academic year into three periods, separated by breaks. In some jurisdictions, trimester is used in its original meaning to indicate a quarter system (since three months is a quarter of a year), or a variation of it.