HF

Multiple Entries:
  HF    Hf    hf    hafnium  

Concise Oxford English Dictionary © 2008 Oxford University Press:
HF

▶abbreviation Physics high frequency.

Concise Oxford English Dictionary © 2008 Oxford University Press:
Hf

▶symbol the chemical element hafnium.

Concise Oxford English Dictionary © 2008 Oxford University Press:
hf

▶abbreviation half.

Concise Oxford English Dictionary © 2008 Oxford University Press:
hafnium /ˈhafnɪəm/

▶noun the chemical element of atomic number 72, a hard silver-grey metal resembling zirconium. (Symbol: Hf)

– origin 1920s: from Hafnia, Latinized form of Dan. Havn, former name of Copenhagen.