passivate
verb
pas·siv·ate ˈpa-si-ˌvāt 
passivated; passivating
transitive verb
1
: to make inactive or less reactive
passivate the surface of steel by chemical treatment
2
: to protect (something, such as a solid-state device) against contamination by coating or surface treatment
passivation
ˌpa-si-ˈvā-shən
noun 
Word History
First Known Use
1913, in the meaning defined at sense 1
- principal meridian
- principal moment
- principal parts
- principal plane of symmetry
- principal planet
- principal quantum number
- principal rafter
- principal ray
- principal section
- principal sum
- principal visual ray
- principal work
- principalities
- principality
- principally
- principalness
- principals
- principalship
- principalships
- principate
- principates
- principe
- principes
- principia
- principial