pr

Multiple Entries:
  pr    PR    Pr    praseodymium  

Concise Oxford English Dictionary © 2008 Oxford University Press:
pr

▶abbreviation

• 1 pair.

• 2 archaic per.

Concise Oxford English Dictionary © 2008 Oxford University Press:
PR/piːˈɑː(r)/

▶abbreviation

• 1 proportional representation.

• 2 public relations.

• 3 N. Amer. Puerto Rico.

Concise Oxford English Dictionary © 2008 Oxford University Press:
Pr

▶symbol the chemical element praseodymium.

Concise Oxford English Dictionary © 2008 Oxford University Press:
praseodymium /ˌpreɪzɪə(ʊ)ˈdɪmɪəm/

▶noun the chemical element of atomic number 59, a soft silvery-white metal of the lanthanide series. (Symbol: Pr)

– origin C19: mod. L., from Ger. Praseodym, from Gk prasios ‘leek-green’ (because of its green salts) + Ger. Didym ‘didymium’.