1able to be turned the other way round:a reversible pushchair seat (of a garment or fabric) faced on both sides so as to be worn or used with either outside: a reversible jacket a reversible duvet cover
2(of the effects of a process or condition) capable of being reversed so that the previous state is restored:potentially reversible forms of renal failure Chemistry (of a reaction) occurring together with its converse, and so yielding an equilibrium mixture of reactants and products: the formation of ethyl acetate from ethyl alcohol and acetic acid is a reversible reaction Physics (of a change or process) capable of complete and detailed reversal, especially denoting or undergoing an ideal change in which a system is in thermodynamic equilibrium at all times: the entropy change is zero only in the limiting case of a reversible process Chemistry (of a colloid) capable of being changed from a gel into a sol by a reversal of the treatment which turns the sol into a gel: a reversible sol-gel transformation