The Collaborative International Dictionary of English v.0.48:

Pseudopod \Pseu"do*pod\, n. [Pseudo- + -pod.]
   1. (Biol.) Any protoplasmic filament or irregular process
      projecting from any unicellular organism, or from any
      animal or plant call.
      [1913 Webster]

   2. (Zool.) A rhizopod.
      [1913 Webster]

WordNet (r) 3.0 (2006):

pseudopod
    n 1: temporary outgrowth used by some microorganisms as an organ
         of feeding or locomotion [syn: pseudopod, pseudopodium]