InconelPronunciation: /ˈɪnkənɛl/Definition of Inconel noun [mass noun] trademark an alloy of nickel containing chromium and iron, resistant to corrosion at high temperatures. Origin: 1930s: apparently from I(nternational) N(ickel) Co(mpany), on the pattern of nickelInconel in other Oxford dictionaries Definition of Inconel in the US English dictionary