an·ti·mo·ny [an-tuh-moh-nee]
–noun Chemistry. a brittle, lustrous, white metallic element occurring in nature free or combined, used chiefly in alloys and in compounds in medicine. Symbol: Sb; atomic number: 51; atomic weight: 121.75.
from dictionary.com
Duh, I should have known this one.
A daily (or nearly so) addition to my lexicon.
