Meaning of PRE- in English

PRE-

A prefix denoting priority (of time, place, or rank); as, precede, to go before; precursor, a forerunner; prefix, to fix or place before; preeminent eminent before or above others. Pre- is sometimes used intensively, as in prepotent, very potent.

Webster's Revised Unabridged English Dictionary.      Пересмотренный полный словарь английского языка Webster.