Pharisaism \Phar`i*sa"ism\, n. [Cf. F. pharisaisme.] 1. The notions, doctrines, and conduct of the Pharisees, as a sect. --Sharp. 2. Rigid observance of external forms of religion, without genuine piety; hypocrisy in religion; a censorious, self-righteous spirit in matters of morals or manners. ``A piece of pharisaism.'' --Hammond.