litmus

資訊
發音
litmus
定義
名詞 不可數名詞
A dyestuff extracted from certain lichens, that changes color when exposed to pH levels greater than or less than certain critical levels.
詞源
意思註釋
uncountable
名詞 
A simple test of acidity in a liquid using litmus, usually in the form of litmus paper.
詞源
名詞 
A simple test of any attribute; a litmus test.
詞源
名詞 動詞 形容詞 副詞 其它
詞源
1495, earlier lytmos, from Old Norse litmosi ‎(“moss used for dyeing”), from lita ‎(“to dye, stain”), from litr ‎(“colour, dye, blee”), from Proto-Germanic *wlitiz, *wlituz ‎(“appearance, blee”), from Proto-Indo-European *wel- ‎(“to see”) + mosi ‎(“moss”). Cognate with Old English wlite ‎(“appearance, form, brightness, countenance”). More at moss.
參考書目
  • 維基詞典 :litmus (CC BY-SA 3.0)
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