capable of reversing or of being reversed.
capable of reestablishing the original condition after a change by the reverse of the change.
(of a fabric) woven or printed so that either side may be exposed.
that can be worn with either side out: a reversible jacket.
a garment, especially a coat, that can be worn with either side exposed.

1640–50; reverse + -ible

reversibility, reversibleness, noun
reversibly, adverb
nonreversibility, noun
nonreversible, adjective
nonreversibleness, noun
nonreversibly, adverb
unreversible, adjective
unreversibleness, noun
unreversibly, adverb Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
reversible (rɪˈvɜːsəbəl)
1.  capable of being reversed: a reversible decision
2.  capable of returning to an original condition
3.  chem, physics capable of assuming or producing either of two possible states and changing from one to the other: a reversible reaction
4.  thermodynamics (of a change, process, etc) occurring through a number of intermediate states that are all in thermodynamic equilibrium
5.  (of a fabric or garment) woven, printed, or finished so that either side may be used as the outer side
6.  a reversible garment, esp a coat

Collins English Dictionary - Complete & Unabridged 10th Edition
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Encyclopedia Britannica


in thermodynamics, a characteristic of certain processes (changes of a system from an initial state to a final state spontaneously or as a result of interactions with other systems) that can be reversed, and the system restored to its initial state, without leaving net effects in any of the systems involved. An example of a reversible process would be a single swing of a frictionless pendulum from one of its extreme positions to the other. The swing of a real pendulum is irreversible because a small amount of the mechanical energy of the pendulum would be expended in performing work against frictional forces, and restoration of the pendulum to its exact starting position would require the supply of an equivalent amount of energy from a second system, such as a compressed spring in which an irreversible change of state would occur.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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