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 (vâr′ē-ə-bəl, văr′-)
a. Likely to change or vary; subject to variation; changeable.
b. Inconstant; fickle.
2. Biology Tending to exhibit genetic variation or variation in a physical trait: geographically variable color patterns.
3. Mathematics Having no fixed quantitative value.
1. Something that varies or is prone to variation.
2. Astronomy A variable star.
3. Mathematics
a. A quantity capable of assuming any of a set of values.
b. A symbol representing such a quantity. For example, in the expression a2 + b2 = c2, a,b, and c are variables.

var′i·a·ble·ness n.
var′i·a·bly adv.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.variableness - the quality of being subject to variationvariableness - the quality of being subject to variation
changeability, changeableness - the quality of being changeable; having a marked tendency to change; "the changeableness of the weather"
variedness - characterized by variation
variegation - variability in coloration
personal equation - variability attributable to individual differences
invariableness, invariance, invariability - the quality of being resistant to variation
References in classic literature ?
Lecount, than the variableness of the wind in this climate?" proceeded the captain, shifting the camp-stool to the scientific side of him.
I raised my head, and gathered the bills and letters together, and stood up a man again, wondering at the variableness of my own temper, at the curious elasticity of that toughest of all the vital substances within us, which we call Hope.
The cause of this is not to be found in the variableness of her humor.