a soft yellowish-white trivalent metallic element of the rare earth group; can be recovered from bastnasite or monazite by an ion-exchange process
a self-governing commonwealth associated with the United States occupying the island of Puerto Rico
a promotion intended to create goodwill for a person or institution
Initialism of public relations.
Abbreviation of propyl.
Initialism of per rectal or per rectum.
Initialism of Port Republic, New Jersey.