'Gregarine' definitions:

Definition of 'gregarine'

(from WordNet)
noun
Vermiform protozoans parasitic in insects and other invertebrates

Definition of 'Gregarine'

From: GCIDE
  • Gregarine \Greg"a*rine\, a. (Zool.) Of or pertaining to the Gregarin[ae]. -- n. One of the Gregarin[ae]. [1913 Webster]