Anatomy . a thin, pliable sheet or layer of animal or vegetable tissue, serving to line an organ, connect parts, etc.

Cell Biology . the thin, limiting covering of a cell or cell part.

noun

film , lamina , leaf , mucosa , sheath , sheetnotes:tissue is a collection of cells that form a thin but tough structure and each type of tissue has a special function; a membrane is a thin layer of tissue , sheathing , amnion , chorion , diaphragm , division , hymen , partition , peritoneum , septum , serosa