[syn: variation, variance]
The Collaborative International Dictionary of English v.0.48:
Variance \Va"ri*ance\, n. [L. variantia.]
1. The quality or state of being variant; change of
condition; variation.
[1913 Webster]
2. Difference that produces dispute or controversy;
disagreement; dissension; discord; dispute; quarrel.
[1913 Webster]
That which is the strength of their amity shall
prove the immediate author of their variance.
--Shak.
[1913 Webster]
3. (Law) A disagreement or difference between two parts of
the same legal proceeding, which, to be effectual, ought
to agree, -- as between the writ and the declaration, or
between the allegation and the proof. --Bouvier.
[1913 Webster]
4. (Statistics) The expected value of the square of the
deviation from the mean of a randomly distributed
variable; the second moment about the mean. This is also
the square of the standard deviation.
[PJC]
At variance, in disagreement; in a state of dissension or
controversy; at enmity. "What cause brought him so soon at
variance with himself?" --Milton.
[1913 Webster]
WordNet (r) 3.0 (2006):
variance
n 1: an event that departs from expectations [syn:
discrepancy, variance, variant]
2: discord that splits a group [syn: division, variance]
3: the second moment around the mean; the expected value of the
square of the deviations of a random variable from its mean
value
4: a difference between conflicting facts or claims or opinions;
"a growing divergence of opinion" [syn: discrepancy,
disagreement, divergence, variance]
5: the quality of being subject to variation [syn:
variability, variableness, variance] [ant:
invariability, invariableness, invariance]
6: an official dispensation to act contrary to a rule or
regulation (typically a building regulation); "a zoning
variance"
7: an activity that varies from a norm or standard; "any
variation in his routine was immediately reported" [syn:
variation, variance]