say it: oh-vur-SIM-pli-fi-kay-shuhn
oversimplification is a noun meaning "an act of excessive simplification; the act of making something seem simpler than it really is". It carries 2 recorded senses.
an act of excessive simplification; the act of making something seem simpler than it really is
a simplification that goes too far (to the point of misrepresentation)
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 oversimplification 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.