operculate
adjective
oper·cu·late ō-ˈpər-kyə-lət 
variants or less commonly operculated
ō-ˈpər-kyə-ˌlā-təd
: having an operculum
Word History
Etymology
borrowed from New Latin operculātus, going back to Latin, past participle of operculāre "to cover with a lid," derivative of operculum "cover, lid" — more at operculum
First Known Use
circa 1775, in the meaning defined above