|n.||1.||Ancient Persian religion, esp. as represented by the Magi.|
This system we shall call 'Persism', 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.
|1.||A Persian idiom.|
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.