Definitions
noun
a symbol (like x or y) that is used in mathematical or logical expressions to represent a variable quantity
adjective
liable to or capable of change
“rainfall in the tropics is notoriously variable”
noun
something that is likely to vary; something that is subject to variation
“the weather is one variable to be considered”
adjective
designed so that a property (as e.g. light) can be varied
“a variable capacitor”
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