say it: pree-kuhn-DISH-uhn
precondition is a noun and verb meaning "an assumption on which rests the validity or effect of something else". It carries 4 recorded senses.
an assumption on which rests the validity or effect of something else
an assumption that is taken for granted
a condition that is a prerequisite
put into the required condition beforehand
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 precondition 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.