Cur"cu*min (-m?n), n. Chem.
The coloring principle of turmeric, or curcuma root, extracted as an orange yellow crystalline substance, C14H14O4, with a green fluorescence.
⇒ It possesses acid properties and with alkalies forms brownish salts. This change in color from yellow to brown is the characteristic reaction of tumeric paper. See Turmeric paper, under Turmeric.
© Webster 1913.