detectio

From dētegō (“to uncover, to discover, to detect”) +‎ -tio (“-tion: forming nouns”), from de- (“un-”) + tegō (“to cover, to hide”).

• (Classical Latin) IPA^(key): [deːˈteːk.ti.oː]
• (modern Italianate Ecclesiastical) IPA^(key): [d̪eˈt̪ɛk.t̪͡s̪i.o]

dētēctiō f (genitive dētēctiōnis); third declension

1. uncovering, variously
   1. discovery, the act or process of learning something new
   2. accusation, the act or process of exposing hidden crime or heresy
   3. detection, the act or process of finding out something hidden

Third-declension noun.