PRASEODYMIUM

praseodymium, Pr, atomic number

(noun) a soft yellowish-white trivalent metallic element of the rare earth group; can be recovered from bastnasite or monazite by an ion-exchange process

Source: WordNet® 3.1

Etymology

Noun

praseodymium (usually uncountable, plural praseodymiums)

A chemical element (symbol Pr) with an atomic number of 59, a soft, silvery, malleable and ductile metal, valued for its magnetic, electrical, chemical, and optical properties.

Source: Wiktionary

Pra`se*o*dym"i*um, n. Etym: [Praseo- + didymium.] (Chem.)

Definition: An elementary substance, one of the constituents of didymium; - - so called from the green color of its salts. Symbol Ps. Atomic weight 143.6.

Source: Webster’s Unabridged Dictionary 1913 Edition

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