Hol`o·me·tab'o·la noun plural [ New Latin See Holo- , and Metabola .] (Zoology) Those insects which have a complete metamorphosis; metabola. Found on http://www.encyclo.co.uk/webster/H/54
Holometabola is the subdivision of the Pterygota class of insects which undergo a pronounced and complete metamorphosis, typified by butterflies. Found on http://www.probertencyclopaedia.com/browse/BH.HTM