The Collaborative International Dictionary
Bismuthic
Bismuthic \Bis"muth*ic\, a. (Chem.) Of or pertaining to bismuth; containing bismuth, when this element has its higher valence; as, bismuthic oxide.
Wiktionary
bismuthic
a. (context chemistry English) Of, or containing bismuth in its higher valence.
WordNet
bismuthic
adj. containing bismuth (especially in the pentavalent state)