prussiate

[ pruhsh-ee-eyt, -it, pruhs- ]

/ ˈprʌʃ iˌeɪt, -ɪt, ˈprʌs- /

a ferricyanide or ferrocyanide.

a salt of prussic acid; a cyanide.

Origin of prussiate

From French, dating back to 1780–90; see origin at prussic acid, -ate²

The piece being heated may then, if small, be dipped in the prussiate of potash, or if large have the same spread upon it.

Modern Machine-Shop Practice, Volumes I and II |Joshua Rose
In default of prussiate of potash, animal or even vegetable charcoal may be used, but the latter is a very imperfect substitute.

The Art of Travel |Francis Galton
The prussiate being decomposed, and apparently dissipated, the iron is to be quenched in cold water.

A Dictionary of Arts, Manufactures and Mines |Andrew Ure
I have a peculiar kind of steel which I cannot harden by fire and water, neither will it caseharden by prussiate of potash.

Scientific American, Vol. XXXIX.--No. 24. [New Series.], December 14, 1878 |Various

prussiate

/ (ˈprʌʃɪɪt) /

any cyanide, ferrocyanide, or ferricyanide