1. a priori - Adjective
2. a priori - Adverb
4. a priori - Adjective Satellite
Characterizing that kind of reasoning which deduces consequences from definitions formed, or principles assumed, or which infers effects from causes previously known; deductive or deductively. The reverse of a posteriori.
Applied to knowledge and conceptions assumed, or presupposed, as prior to experience, in order to make experience rational or possible.
Source: Webster's dictionaryWe must admit with humility that, while number is purely a product of our minds, space has a reality outside our minds, so that we cannot completely prescribe its properties a priori. Carl Friedrich Gauss
The judgment that human life is worth living, or rather can and ought to be made worth living, ... underlies all intellectual effort; it is the a priori of social theory, and its rejection (which is perfectly logical) rejects theory itself. Herbert Marcuse
I don't believe in empirical science. I only believe in a priori truth. Kurt Gödel
Life has no meaning a priori . Before you come alive, life is nothing its up to you to give it a meaning and value is nothing else but the meaning that you choose. Jean-Paul Sartre
Both a priori reasoning and experience teach us that as as these funds grow larger the geometrical rate of growth by compound interest ultimately defeats itself. Benjamin Graham
Faith in people is an a priori requirement for dialogue. Paulo Freire