pro·vi·so 
(prə-vīzō)
(prə-vīzō)n. pl. pro·vi·sos or pro·vi·soes
A clause in a document imposing a qualification, condition, or restriction.
[Middle English, from Medieval Latin prōvīsō (quod), provided (that), from Latin prōvīsō, ablative of prōvīsus, past participle of prōvidēre, to provide; see PROVIDE.]