Sentence:  This system we shall call <WSD>'Persism</WSD>', in order to free ourselves of the popular associations still connected with such terms as magism, Parseeism, and so forth; meaning by 'Persism' the teaching of Zarathustra as it affected the Greek and Latin world.Webster 1913 
Meaning of the word marked with <WSD> tags:  Ancient Persian religion, especially as represented by the Magi.