From The Collaborative International Dictionary of English v.0.48 :
Practician \Prac*ti"cian\, n. [F. praticien, OF. also
practicien.]
One who is acquainted with, or skilled in, anything by
practice; a practitioner.
[1913 Webster]
From WordNet (r) 3.0 (2006) :
practician
n 1: someone who practices a learned profession [syn:
practitioner, practician]