membrane
thin, film-like structure that separates two fluids, acting either as a selective barrier or a separating structure
semipermeable membrane
membrane which will allow certain molecules or ions to pass through it by diffusion
synthetic membrane
synthetically created membrane which is usually intended for separation purposes in laboratory or in industry
biological membrane
selectively permeable membrane that separates the interior of a cell from the external environment or creates intracellular compartments by serving as a boundary between one part of the cell and another
septum
engineered membrane that permits transfer of a substance without contact with air
vapor barrier
any material used to resist diffusion of moisture through walls, floors, ceilings, or roofs
Acoustic membrane
thin vibrating layer that produces sound