holometabola

from WordNet (r) 3.0 (2006)

holometabola
    n 1: insects that undergo complete metamorphosis [syn:
         {holometabola}, {metabola}]

from The Collaborative International Dictionary of English v.0.48

Holometabola \Hol`o*me*tab"o*la\, n. pl. [NL. See {Holo-}, and
   {Metabola}.] (Zool.)
   Those insects which have a complete metamorphosis; metabola.
   [1913 Webster]