say it: in-tur-VEN-shuhn
intervention is a noun meaning "the act of intervening (as to mediate a dispute, etc.)". It carries 5 recorded senses.
the act of intervening (as to mediate a dispute, etc.)
“it occurs without human intervention”
a policy of intervening in the affairs of other countries
the act or fact of interposing one thing between or among others
(law) a proceeding that permits a person to enter into a lawsuit already in progress; admission of person not an original party to the suit so that person can protect some right or interest that is allegedly affected by the proceedings
“the purpose of intervention is to prevent unnecessary duplication of lawsuits”
law
care provided to improve a situation (especially medical procedures or applications that are intended to relieve illness or injury)
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 intervention 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.