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.
Half life is the period of time for half of something to be eliminated or transformed by some process. The term is used in many fields: 1  nuclear physics: period of time for half of a radioisotope to decay. 2  medicine: period of time for half of a drug to be eliminated by metabolism and/or excretion.