noun
: paper impregnated with an extract of turmeric and used as a test for alkaline substances which turn it from yellow to reddish brown and for boric acid which turns it red brown
noun
: paper impregnated with an extract of turmeric and used as a test for alkaline substances which turn it from yellow to reddish brown and for boric acid which turns it red brown
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012