transitive verb-·vat·ed, -·vat·ing
Metallurgy to treat (a metal) so as to form a protective coating on its surface and reduce its chemical activity
Origin of passivatepassive + -ate
transitive verbpas·si·vat·ed, pas·si·vat·ing, pas·si·vates
- To treat or coat (a metal) in order to reduce the chemical reactivity of its surface.
- To coat (a semiconductor, for example) with an oxide layer to protect against contamination and increase electrical stability.
(third-person singular simple present passivates, present participle passivating, simple past and past participle passivated)