say it: uh-PRAHK-suh-muht
approximate is an adjective and verb meaning "not quite exact or correct". It carries 5 recorded senses.
not quite exact or correct
“the approximate time was 10 o'clock”
“a rough guess”
“a ballpark estimate”
located close together
“with heads close together”
“approximate leaves grow together but are not united”
be close or similar
“Her results approximate my own”
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 approximate 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.