a priori
Concise Oxford English Dictionary © 2008 Oxford University Press:
a priori /ˌeɪ prʌɪˈɔːrʌɪ, ˌɑː prɪˈɔːri/
▶adjective & adverb based on theoretical deduction rather than empirical observation.
– derivatives
apriorism /eɪˈprʌɪərɪz(ə)m/ noun.
apriorism /eɪˈprʌɪərɪz(ə)m/ noun.
– origin C16: L., ‘from what is before’.
'a priori' also found in these Oxford entries:

