adj.
1.liable to or capable of change
2.marked by diversity or difference
3.(used of a device) designed so that a property (as e.g. light) can be varied variable n.
1.something that is likely to vary
2.a quantity that can assume any of a set of values
3.a star that varies noticeably in brightness
4.a symbol (like x or y) that is used in mathematical or logical expressions to represent a variable quantity