a prefix signifying back, against, again, anew; as, recline, to lean back; recall, to call back; recede; remove; reclaim, to call out against; repugn, to fight against; recognition, a knowing again; rejoin, to join again; reiterate; reassure. combinations containing the prefix re- are readily formed, and are for the most part of obvious signification.
RE-
Meaning of RE- in English
Webster English vocab. Английский словарь Webster. 2012