unnitrogenized
/(ˌ)ʌnnʌɪˈtrɒdʒɪnʌɪzd/ /(ˌ)ʌnˈnʌɪtrədʒɪnʌɪzd/adjective
Not containing or combined with nitrogen; (Metallurgy ) that has not undergone nitridation.
Origin
Mid 19th century; earliest use found in The Chemical Gazette. From un- + nitrogenized.