Search Result for "permanganic acid":
Wordnet 3.0

NOUN (1)

1. an unstable purple acid (HMnO4) known only in solution or of permanganate salts; 



WordNet (r) 3.0 (2006):

permanganic acid
    n 1: an unstable purple acid (HMnO4) known only in solution or
         of permanganate salts