Definition of anteclypeus in US English:

anteclypeus

noun

Entomology
  • In the mouthparts of some insects: the lower section of a divided clypeus, situated between the postclypeus and the labrum.

Origin

Late 19th century; earliest use found in Alpheus Packard (1839–1905). From ante- + clypeus, after postclypeus.

Pronunciation

anteclypeus

/ˌantɪˈklɪpɪəs/