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