Definition, Meaning & Synonyms

membrane

noun

/ˈmɛm.brɪn/

Definition

A membrane is a thin layer of tissue that covers a surface, lines a cavity, or divides a space or organ.

Examples

Biological membranes, such as the cell membrane, control the movement of substances in and out of cells.
The building was constructed with a waterproof membrane to prevent leakage.
In the ear, the tympanic membrane vibrates in response to sound waves.

Meaning

In biological terms, membranes are vital structures that separate different environments within an organism and are essential for various functions such as protection and transport.