[1] : The Collaborative International Dictionary of English v.0.48

zarathustra \zar`athus"tra\, zarathuster \zar`athus"ter\,
   prop. n.
   the persian name for zoroaster.
   pjc zarathustrian
see also:
zoroaster 

[2] : The Collaborative International Dictionary of English v.0.48

zoroaster \zo`roas"ter\, prop. n.
   the persian prophet zarathustra, who probably lived in the
   second millenium b. c. his treachings form the basis for the
   religion zoroastrianism.
   pjc
see also:
zarathustra 

[3] : WordNet (r) 2.0

zarathustra
     n : persian prophet who founded zoroastrianism circa 628-551
         bc syn: zoroaster
see also:
zoroaster 

Zarathustra >> Z Words
Zarathustra, definition of term: Zarathustra
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