A priori
WordNet
adjective
(1) Involving deductive reasoning from a general principle to a necessary effect; not supported by fact
"An a priori judgment"
(2) Based on hypothesis or theory rather than experiment
adverb
(3) Derived by logic, without observed facts
WiktionaryText
Etymology
First attested in 1710, from , literally from the former, from priori.
Adjective
a priori
- Known ahead of time.
- Based on hypothesis rather than experiment.
- In his opening argument, the student mentioned nothing beyond his a priori knowledge.
- Self-evident, intuitively obvious