1. a thin layer of tissue that covers or lines parts of the body
Usage: biology
2. a thin flexible sheet or layer that separates spaces or substances
Usage: technical

Examples

• The cell membrane controls what enters and exits the cell.
• A thin membrane separates the two chambers of the heart.
• The mucous membrane in your nose helps filter the air you breathe.
• Scientists developed a special membrane to filter water.
• The eardrum is a delicate membrane that vibrates with sound waves.
• This waterproof membrane keeps moisture out of the building.