'Revert' definitions:

Definition of 'revert'

verb

Go back to a previous state; "We reverted to the old rules" [syn: revert, return, retrovert, regress, turn back]

verb

Undergo reversion, as in a mutation

From: GCIDE

Revert \Re*vert"\, v. t. [imp. & p. p. Reverted; p. pr. & vb. n. Reverting.] [L. revertere, reversum; pref. re- re- + vertere to turn: cf. OF. revertir. See Verse, and cf. Reverse.]
1. To turn back, or to the contrary; to reverse. [1913 Webster]
Till happy chance revert the cruel scence. --Prior. [1913 Webster]
The tumbling stream . . . Reverted, plays in undulating flow. --Thomson. [1913 Webster]
2. To throw back; to reflect; to reverberate. [1913 Webster]
3. (Chem.) To change back. See Revert, v. i. [1913 Webster]
To revert a series (Alg.), to treat a series, as y = a + bx + cx^2 + etc., where one variable y is expressed in powers of a second variable x, so as to find therefrom the second variable x, expressed in a series arranged in powers of y. [1913 Webster]

From: GCIDE

Revert \Re*vert"\, v. i.
1. To return; to come back. [1913 Webster]
So that my arrows Would have reverted to my bow again. --Shak. [1913 Webster]
2. (Law) To return to the proprietor after the termination of a particular estate granted by him. [1913 Webster]
3. (Biol.) To return, wholly or in part, towards some preexistent form; to take on the traits or characters of an ancestral type. [1913 Webster]
4. (Chem.) To change back, as from a soluble to an insoluble state or the reverse; thus, phosphoric acid in certain fertilizers reverts. [1913 Webster]

From: GCIDE

Revert \Re*vert"\, n. One who, or that which, reverts. [1913 Webster]
An active promoter in making the East Saxons converts, or rather reverts, to the faith. --Fuller. [1913 Webster]