Preps

A preventative medical regiment of HIV medicines used to protect against HIV seroconversion after an exposure.

"Some doctors will prescribe pre-exposure prophylaxis to promiscuous people that have a hard time controlling themselves or their condom usage to prevent them from getting AIDS."

Preparation.

A prep school.

A student or graduate of a prep school, a preppy.

Homework, work set to do outside class time, used widely in public schools and preparatory schools but not state schools.

To prepare.

(grammar, strict sense) Any of a class of non-inflecting words typically employed to connect a following noun or a pronoun, in an adjectival or adverbial sense, with some other word: a particle used with a noun or pronoun (in English always in the objective case) to make a phrase limiting some other word.

A proposition; an exposition; a discourse.