chrome alum

1. 1.

   a violet-colored salt used in hide tanning and as a mordant in dyeing

   Broadermordantsalt

Questions about chrome alum

What does chrome alum mean?

chrome alum means "a violet-colored salt used in hide tanning and as a mordant in dyeing".

Is chrome alum a common word?

chrome alum is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.