revision n.

1560s, "to look at again" (a sense now obsolete), from French reviser (13c.), from Latin revisere "look at again, visit again, look back on," frequentative of revidere (past participle revisus) "see again, go to see again," from re- "again" (here probably denoting "repetition of an action;" see re-) + videre "to see" (from PIE root *weid- "to see"). Meaning "to look over again with intent to improve or amend" is recorded from 1590s. Related: Revised; revising.

1903, from revision + -ism. Originally in reference to a policy of introducing socialism gradually, by evolution rather than revolution, used as a term of abuse by Marxists. The general sense of "revised attitude toward some situation, doctrine, etc." is by 1921. Revisionist (adj.) "favoring or supporting revision" (of a creed, law, etc.) is from 1850; as a noun from 1854 in reference to one who favors or supports revision; specifically in reference to historical narratives by 1934, originally of the causes of World War I.