(n.) An elementary substance, one of the constituents of didymium; -- so called from the green color of its salts. Symbol Ps. Atomic weight 143.6.
Webster's Revised Unabridged Dictionary
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| MLA | Webster's. "praseodymium" 27 May 2011. Web. 27 September 2026. <http://smartdefine.org/praseodymium/definitions/2048213> |