- a thin, pliable sheet or layer of animal or vegetable tissue, serving to line an organ, connect parts, etc.
- the thin, limiting covering of a cell or cell part.
- any thin pliable sheet of material
- a pliable sheetlike usually fibrous tissue that covers, lines, or connects plant and animal organs or cells
- a double layer of lipid, containing some proteins, that surrounds biological cells and some of their internal structures
- a two-dimensional entity postulated as a fundamental constituent of matter in superstring theories of particle physics
- a skin of parchment forming part of a roll
