Definition of preoperculum in English:

preoperculum

(also praeoperculum)

noun

  • Ichthyology. The anterior of four bones forming the operculum in fishes.

Origin

Early 19th century; earliest use found in John Stark (fl. 1828). From pre- + operculum.

Pronunciation

preoperculum

/ˌpriːɒˈpəːkjʊləm//ˌpriːə(ʊ)ˈpəːkjʊləm/