Try Our Apps


The Best Internet Slang

roche alum

[rohch] /roʊtʃ/
noun, Chemistry.
an alumlike substance derived from alunite.
Origin of roche alum
late Middle English
1400-50; roche cliff, rocky height (now obsolete), late Middle English (see rock1); apparently partial translation of Middle French alum en roque, alun de roche Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
Cite This Source
Examples from the Web for roche alum
Historical Examples

Word of the Day

Difficulty index for roche alum

Few English speakers likely know this word

Word Value for roche

Scrabble Words With Friends

Nearby words for roche alum