say it: in-ak-ti-VAY-shuhn
inactivation is a noun meaning "the process of rendering inactive". It carries 2 recorded senses.
the process of rendering inactive
“the gene inactivation system”
“thermal inactivation of serum samples”
breaking up a military unit (by transfers or discharges)
military
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 inactivation 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.