Fr.: à priori
1) Logic: Relating to or involving deductive reasoning from a general
principle to the expected facts or effects (dictionary.com).
L., literally "from what comes first," from priori, ablative of prior "former, previous, first," → per-.
Partom "the first," Dehxodâ: fardom; Mid.Pers. fradom, fratom, pratom; O.Pers. fratama-; Av. fratəma- (Skt. prathama- "earliest, initial, first") superlative of fra- "before, forward, forth," cognate with Gk. and L. → pro-.