单词 | nigre |
释义 | nigre/ˈnʌɪɡə/(also niger) Soap-making noun A dark-coloured solution of soap and impurities (colouring material, alkali, etc.) which settles out from the pure soap during the final stage of the manufacturing process. OriginMid 19th century; earliest use found in Andrew Ure (1778–1857), chemist. Apparently from classical Latin nigr-, niger black. |
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