n, pl  -nies  :  a trivalent and pentavalent metalloid element that is commonly metallic silvery white, crystalline, and brittle and is used esp. in alloys and semiconductors and in medicine as a constituent of various antiprotozoal agents (as tartar emetic) - symbol Sb - see ELEMENTtable   .
 
 
 
Published under license with Merriam-Webster, Incorporated.  © 1997-2024.