Difference between revisions of "Orchil"
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| − | '''orchil''' ( | + | '''orchil''' ([[Category:Adjective]][[:Category:Adjective|adjective]], [[colour term]]; ''variant spelling:'' [[orchill]]; ''also as'' [[Category:Noun]][[:Category:Noun|noun]]: ''sl.'' orchil, ''pl.'' orchils; ''synonym:'' [[litmus]], ''no plural'') – ''referring to colour:'' reddish violet to deep purple or blue depending on the pH (a low, acid pH results in a reddish colour; a high, basic pH gives a blue colour); ''referring to the pigment:'' an organic dye derived from a variety of lichens like most ''Roccella ''species, some ''Lecanora ''and ''Ochrolechia'' species, and several other genera; referred to as litmus if used as pH indicator. |
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Latest revision as of 02:00, 7 December 2005
orchil (adjective, colour term; variant spelling: orchill; also asnoun: sl. orchil, pl. orchils; synonym: litmus, no plural) – referring to colour: reddish violet to deep purple or blue depending on the pH (a low, acid pH results in a reddish colour; a high, basic pH gives a blue colour); referring to the pigment: an organic dye derived from a variety of lichens like most Roccella species, some Lecanora and Ochrolechia species, and several other genera; referred to as litmus if used as pH indicator.
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