ammonio-
1 
a combining form representing ammonia, or ammonium, in compound words:
ammonioferric.
Also, especially before a vowel, ammoni-.
Related Word
- ammonioferric oxalate
1853 Family Her. 3 Dec. 510/2The solution of ammonio-nitrate of silver. 
1876 Harley Mat.Med. 207Ammonio-chloride of Iron was discovered by Basil Valentine in the 14th cent. 
ORIGIN: from ammonium -o- 
ammonio-
— see ammoni-
— see ammoni-
ammonio-
Prefix
- mineralogy Forms the name of the ammonium analogue of a certain mineral.
Derived terms
 English words prefixed with ammonio-