Definition of "lacmus" []

• Litmus. (noun)

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• "Cuthbert Gordon credits the development of cudbear in this way; he claimed to find a plentiful source for a certain lichen and, knowing that the purple colors it made are easily destroyed by light, set himself to find a stabilization method. reference Similarly, Jean-Baptiste Pont's descriptions of his inspiration for finding a more efficient dye extraction process was, he claimed, based on knowledge of the high cost of cochineal. reference Other petitions — Johann Carl Barth's for a privilege in Saxony to produce a blue dye from lacmus, for instance — do not mention the discovery process at all but concentrate instead on the economic advantage of the production method and the deliberation that its reworking demanded. 2"
• "'lis lanceolatis, pinnis oblongis, lacmus ova - tis dentatis, stipite glabro, rachi pubescente."