operculi-
combining form of L. operculum, as in opercuˈliferous a. [-ferous], having an operculum, operculate; oˈperculiform a. [-form], having the form of a lid or operculum; opercuˈligenous a. [-gen + -ous: cf. alkaligenous], producing an operculum: said of the metapodium of gastropods; opercuˈligerous a. [-gerous] = operculiferous, operculigenous.
| 1857 Mayne Expos. Lex., Operculiferus,..provided with a horny opercule, serving to close the cells which they inhabit: *operculiferous. |
| 1828 Stark Elem. Nat. Hist. II. 76 Radiolites... Shell inequivalve..lower valve turbinated..the upper..*operculiform. 1836 Penny Cycl. V. 311/1 The opposite valve generally smaller, flatter, and sometimes operculiform. |
| 1882 Ogilvie s.v. Metapodium, The posterior lobe of the foot in mollusca, often called the *operculigenous lobe, because it develops the operculum when this structure is present. |
| 1856 Woodward Mollusca 47 Trochus Ziziphinus..exhibits..an *operculigerous lobe. |