membrane

the membrane surrounding the cytoplasm of a cell

a membrane that lines various cavities in the body and covers the surface of internal organs

describes a membrane of little thickness

a membrane that will allow certain molecules or ions to pass through it by diffusion

a membrane that allows liquids or gases to pass through it

another term for cell membrane, often used for emphasis on the cellular context

the wall-like structure of a membrane, often used interchangeably with cell wall in some contexts

indicates the function of a membrane to enclose something

indicates passage from one side of a membrane to the other