An Etymological Dictionary of Astronomy and Astrophysics

1. The practice and practical side of knowledge or skills, as opposed to the → theory.
   

2. Accepted practice or custom.

Etymology (EN): M.L. praxis “practice, action,” from Gk. praxis “practice, action, doing,” from stem of prassein “to do, to act.”

Etymology (PE): Varzidâr, from varzid past stem of varzidan, → practice, + -âr prefix forming nouns of action, such as kerdâr, raftâr, didâr, goftâr, jostâr, etc.