Definition of pseudoperculum in US English:

pseudoperculum

(also pseudo-operculum)

noun

Zoology
  • A part of an animal (or plant) structure which forms or resembles a lid but is distinct from an operculum; (in gastropod molluscs) an epiphragm.

Origin

Late 19th century; earliest use found in The Century Dictionary. From post-classical Latin pseudoperculum from pseudo- + operculum.

Pronunciation

pseudoperculum

/ˌs(j)uːdə(ʊ)ˈpəːkjʊləm/