What is the Latin word for alum?

The usual Latin words for “alum” are alūmen, ălūmĭnātus, ălūmĭnōsus. The right choice depends on the sense; see the distinctions below.

English → Latin

“alum” in Latin

alūmenalum ălūmĭnātustinctured with alum ălūmĭnōsusaluminous

The English word alum itself goes back to Latin alūmen.

Riddle & Arnold A Copious and Critical English–Latin Lexicon, 1864

alum

alumen. Containing or impregnated with alum, aluminatus, aluminosus. One engaged in procuring or preparing alum, aluminarius (Inscript.). Alum-water, aqua aluminata.

Quick answer

What is the Latin word for alum?: The usual Latin words for “alum” are alūmen, ălūmĭnātus, ălūmĭnōsus. The right choice depends on the sense; see the distinctions below.

Entry from J. E. Riddle & T. K. Arnold, A Copious and Critical English–Latin Lexicon (rev. C. Anthon, New York: Harper, 1864), digitised by Fergus J. P. Walsh, CC BY-SA 4.0; Latin markup adapted by latindictionary.co.