The Collaborative International Dictionary of English v.0.48:

bacteremia \bac`ter*e"mi*a\ (b[a^]k*t[=e]r*[=e]"m[=e]*[.a] or
   b[a^]k`t[u^]*r[=e]"m[=e]*[.a]), n.
   The presence of bacteria in the blood.

   Syn: bacteriemia.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

bacteremia
    n 1: transient presence of bacteria (or other microorganisms) in
         the blood [syn: bacteremia, bacteriemia,
         bacteriaemia]