say it: VER-ee-uhns
variance is a noun meaning "an event that departs from expectations". It carries 7 recorded senses.
an event that departs from expectations
the second moment around the mean; the expected value of the square of the deviations of a random variable from its mean value
statistics
a difference between conflicting facts or claims or opinions
“a growing divergence of opinion”
the quality of being subject to variation
an official dispensation to act contrary to a rule or regulation (typically a building regulation)
“a zoning variance”
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for variance come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.