visible adj.

c. 1300, "something seen in the imagination or in the supernatural," from Anglo-French visioun, Old French vision "presence, sight; view, look, appearance; dream, supernatural sight" (12c.), from Latin visionem (nominative visio) "act of seeing, sight, thing seen," noun of action from past participle stem of videre "to see," from PIE root *weid- "to see." The meaning "sense of sight" is first recorded late 15c. Meaning "statesman-like foresight, political sagacity" is attested from 1926.

"that cannot be foreseen," 1855, from assimilated form of in- "not, opposite of" (see in- (1)) + previsible (see pre- + visible). Related: Imprevision; imprevisibility.