'Phosphonic' definitions:

Definition of 'Phosphonic'

From: GCIDE
  • Phosphonic \Phos*phon"ic\ (f[o^]s*f[o^]n"[i^]k), a. [Phosphoric + sulphonic.] (Chem.) Pertaining to, or designating, certain derivatives of phosphorous acid containing a hydrocarbon radical with the phosphorus directly bonded to a carbon, and analogous to the sulphonic acids; as, methanephosphonic acid, CH3.PO.(OH)2. [1913 Webster + PJC]