Definition of platygasterid in US English:

platygasterid

(also platygastrid)

noun

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

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.

Pronunciation

platygasterid

/ˌplatɪˈɡast(ə)rɪd/