Definition of platygasterid in English:

platygasterid

Pronunciation /ˌplatɪˈɡast(ə)rɪd/

noun

(also platygastrid)
Entomology
  • Any of the minute hymenopteran insects comprising the family Platygasteridae, which are parasitoids that lay their eggs within those of mealy bugs, moths, whiteflies, and especially gall midges.

adjective

(also platygastrid)
Entomology
  • Of or relating to the family Platygasteridae.

Origin

1920s; earliest use found in Quarterly Review of Biology. From scientific Latin Platygasteridae, family name from Platygaster, genus name + -idae.