inoperculate

As an adjective inoperculate

is (zoology) having no operculum; said of certain gastropod shells.

As a noun null is

zero, nil; the cardinal number before einn.

As an adjective inoperculate is

(zoology) having no operculum; said of certain gastropod shells.

As adjectives the difference between operculate and inoperculate

is that operculate is having an operculum while inoperculate is having no operculum; said of certain gastropod shells.

As a noun operculate

is any gastropod mollusc that has an operculum.

As a noun terms

is .

As an adjective inoperculate is

(zoology) having no operculum; said of certain gastropod shells.