Source : Webster's Revised Unabridged Dictionary (1913)

Amoebiform \A*m[oe]"bi*form\, Amoeboid \A*m[oe]"boid\, a.
   [Am[oe]ba + -form or -oid.] (Biol.)
   Resembling an am[oe]ba; am[oe]ba-shaped; changing in shape
   like an am[oe]ba.

   {Am[oe]boid movement}, movement produced, as in the am[oe]ba,
      by successive processes of prolongation and retraction.

Source : WordNet®

amoeboid
     adj : like an amoeba (especially in having a variable irregular
           shape) [syn: {ameboid}]