Chemistry; also rare general verb meaning ‘make or become disproportionate’
Definitions
(intransitive, chemistry) To undergo disproportionation, forming two or more products of differing oxidation states. Hydrogen peroxide disproportionates into water and oxygen under alkaline conditions.
(transitive, chemistry) To cause (a substance) to undergo disproportionation. The catalyst disproportionates the intermediate radicals.