Webster’s Revised Unabridged Dictionary · 1913
Praxis
Prax′is, n. [NL., fr. Gr. πρᾶξις, fr. πράσσειν to do. See Practice.] 1. Use; practice; especially, exercise or discipline for a specific purpose or object. "The praxis and theory of music." Wood.
2. An example or form of exercise, or a collection of such examples, for practice.