1842 E. Turner Elem. Chem. (ed. 7) 741The cobalto-cyanide of lead..Cobalto-cyanide of Potassium. 
co·bal·to-
combining form 
Etymology: cobalt 
 : bivalent cobalt : cobaltous 
< cobaltocyanic >
< cobaltocyanic >
cobalto-
Prefix
- chemistry cobaltous
| 词汇 | cobalto- | 
| 词根词缀 | OED SOED Webster Wiktionary 
 co·bal·to- < cobaltocyanic > cobalto-Prefix
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