1. (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

• atomic number 59
• praseodymium

2. (noun) a self-governing commonwealth associated with the United States occupying the island of Puerto Rico

• commonwealth of puerto rico
• porto rico
• puerto rico

3. (noun) a promotion intended to create goodwill for a person or institution

• public relations

1. (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

• metal
• metallic element

2. (noun) a promotion intended to create goodwill for a person or institution

• packaging
• promotion
• promotional material
• publicity