variability

var·i·a·bil·i·ty  (vâr--bl-t, vr-)

n. pl. var·i·a·bil·i·ties

The quality, state, or degree of being variable or changeable.

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The manner in which the probability of damage to a specific target decreases with the distance from ground zero; or, in damage assessment, a mathematical factor introduced to average the effects of orientation, minor shielding, and uncertainty of target response to the effects considered.

Thesaurus

Noun	1.	variability - the quality of being subject to variation variableness, variance 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
	2.	variability - the quality of being uneven and lacking uniformity unevenness unregularity, irregularity - not characterized by a fixed principle or rate; at irregular intervals rockiness - the quality of abounding in rocks and stones; "due to the rockiness of the land it was quickly dry even after a heavy rain" ruggedness - the quality of being topologically uneven; "the ruggedness of the mountains" jaggedness - something irregular like a bump or crack in a smooth surface patchiness - unevenness in quality or performance waviness - unevenness produced by waves or wrinkles invariability, evenness - a quality of uniformity and lack of variation