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.
Here are the IRS definitions for at least a 1/2 time student, quoted from form 1098-T instructions . Box 8. Check if at Least Half-Time Student. Check this box if the student was at least a half-time student during any academic period that began in 2011. A half-time student is a student enrolled for at least half the full-time academic workload for the course of study the student is pursuing.