Definitions
A dye used to test whether a substance is acidic or alkaline.
Word origin
From Middle English litmose, lytmose, litemose, from Old Norse litmosi (“moss used for dyeing”), from lita (“to dye, stain”) + mosi (“moss”), the former from litr (“colour, dye, blee”), from Proto-Germanic *wlitiz, *wlituz (“appearance, blee”), from Proto-Indo-European *wel- (“to see”). Cognate with Old English wlite (“appearance, form, brightness, countenance”). More at moss.
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer1 curated clues
01“Acid test dye”6 letters
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