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say it: in-KUR-zhuhn
incursion is a noun meaning "the act of entering some territory or domain (often in large numbers)". It carries 3 recorded senses.
the act of entering some territory or domain (often in large numbers)
“the incursion of television into the American living room”
an attack that penetrates into enemy territory
the mistake of incurring liability or blame
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 incursion 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.