Attributive Designating a reaction mechanism proposed by Zeldovich for the oxidation of nitrogen to nitric oxide during combustion; of or relating to this mechanism. Especially in "Zeldovich mechanism", "Zeldovich reaction".
The mechanism involves a two-step chain process: O + N₂ → NO + N; N + O₂ → NO + O.
1950s. From the name of Jakov Borisovič Zel′dovič, Russian physicist, who first described the mechanism.