pr [ ,pi: 'a:(r) ]

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

    同义词： praseodymium atomic number 59

  • a self-governing commonwealth associated with the United States occupying the island of Puerto Rico

    同义词： Puerto Rico Porto Rico Commonwealth of Puerto Rico

  • a promotion intended to create goodwill for a person or institution

    同义词： public relations

以上来源于: WordNet