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PR    
Pr
n 1: a soft yellowish-white trivalent metallic element of the
rare earth group; can be recovered from bastnasite or
monazite by an ion-exchange process [synonym: {praseodymium},
{Pr}, {atomic number 59}]
2: a self-governing commonwealth associated with the United
States occupying the island of Puerto Rico [synonym: {Puerto
Rico}, {Porto Rico}, {Commonwealth of Puerto Rico}, {PR}]
3: a promotion intended to create goodwill for a person or
institution [synonym: {public relations}, {PR}]



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