Pro tempore

(Latin) for a temporary period, for a limited period of time

Pro tempore or pro tem is a Latin phrase which best translates to "for the time being" in English. This phrase is often used to describe a person who acts as a locum tenens (placeholder) in the absence of a superior, such as the President pro tempore of the United States Senate. It is also commonly used in a general sense to refer to a situation where the length of time is indeterminate, e.g. "I'll be in the library pro tem" and "Put me on the watchlist pro tem".
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Adjective
1. for the time being; "he is the president pro tem"; "designated him to act as consul protempore"- H.H.Fiske
(synonym) pro tem
(similar) impermanent, temporary
Adverb
1. for the time being; temporarily; "accepting pro tem that hypothesis consistent with the facts"- J.W.Krutch
(synonym) pro tem

adv. pro tem

Latin: something done temporarily only and not intended to be permanent. - (read more on Pro tempore)