ad interim

from WordNet (r) 3.0 (2006)

ad interim
    adv 1: for an intervening time; temporarily; "elected to serve
           ad interim"

from The Collaborative International Dictionary of English v.0.48

Ad interim \Ad in"ter*im\[L.]
   Meanwhile; temporary.
   [1913 Webster]

from Bouvier's Law Dictionary, Revised 6th Ed (1856)

AD INTERIM. In the mean time. An officer is sometimes appointed ad interim,
when the principal officer is absent, or for some cause incapable of acting
for the time.

[email protected]