The Collaborative International Dictionary of English v.0.48:

Aerobies \A"["e]r*o*bies\, n. pl. [A["e]ro- + Gr. bi`os life.]
   (Biol.)
   Micro["o]rganisms which live in contact with the air and need
   oxygen for their growth; as the microbacteria which form on
   the surface of putrefactive fluids; aerobes. [obsolescent]
   [Webster 1913 Suppl. +PJC]