a clause in a statute, contract, or the like, by which a condition is introduced.
2.
a stipulation or condition.
Origin: 1400–50; late Middle English < Medieval Latin prōvīsō, for prōvīsō (quod) it being provided (that), ablative neuter singular of Latin prōvīsus, past participle of prōvidēre to provide
1467, from M.L. proviso (quod) "provided (that)," phrase at the beginning of clauses in legal documents (1350), from L. proviso "it being provided," abl. neut. of provisus, pp. of providere (see provide).