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Webster 1913 Edition
Hydroferricyanic
Hyˊdro-ferˊri-cy-an′ic
,Noun.
 [
Hydro-
, 2 + ferricyanic
.] (Chem.) 
Pertaining to, or containing, or obtained from, hydrogen, ferric iron, and cyanogen; 
as, 
. See hydroferricyanic 
acidFerricyanic
.