black flux

English

Noun

black flux (uncountable)

1. A mixture of potassium carbonate and charcoal, obtained by deflagrating tartar with half its weight of niter.

Part or all of this entry has been imported from the 1913 edition of Webster’s Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.
(See the entry for “black flux”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.)