Definition, Meaning & Synonyms

operculum

noun

/əˈpɜːr.kjʊ.ləm/

Definition

A structure that acts as a cover or lid, often found in biological contexts.

Examples

The operculum of a fish helps to protect its gills and allows water to flow over them.
In some snails, the operculum acts as a door that helps to seal the shell’s opening.
The operculum can also play a role in respiration for various aquatic species.

Meaning

Opelculum is typically used to describe a part of an organism that serves as a protective covering or lid, most commonly seen in fish gills and certain invertebrates.