combining form of the word AMMONIUM, indicating the presence of that basyl or its salts in a compound; thus ammonio-chloride of silver, ammonio-cupric sulphate, ammonio-magnesian phosphate = magnesium and ammonium phosphate.
1853. Family Her., 3 Dec., 510/2. The solution of ammonio-nitrate of silver.
1876. Harley, Mat. Med., 207. Ammonio-Chloride of Iron.… This preparation was discovered by Basil Valentine in the fourteenth century.
