Definition of preopercle in English:

preopercle

noun

Ichthyology

Origin

Mid 19th century. From pre- + opercle. Compare earlier preoperculum, preopercule.

Pronunciation

preopercle

/ˌpriːə(ʊ)ˈpəːkl/ /ˌpriːˈəʊpəkl/