VA'RIABLE, a. 1. That may vary or alter; capable of alteration in any manner; changeable; as variable winds or seasons; variable colors.2. Susceptible of change; liable to change; mutable; fickle; unsteady; inconstant; as, the affections of men are variable; passions are variable.His heart I know, how variable and vain.3. In mathematics, subject to continual increase or decrease; in opposition to constant, retaining the same value.VA'RIABLE, n. In mathematics, a quantity which is in a state of continual increase or decrease. The indefinitely small quantity by which a variable is continually increased or diminished, is called its differential, and the method of finding these quantities, the differential calculus.
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