The Collaborative International Dictionary
Turmeric paper
Turmeric \Tur"mer*ic\, a. (Chem.) Of or pertaining to turmeric; resembling, or obtained from, turmeric; specif., designating an acid obtained by the oxidation of turmerol. Turmeric paper (Chem.), paper impregnated with turmeric and used as a test for alkaline substances, by which it is changed from yellow to brown. Turmeric root. (Bot.)
Bloodroot.
Orangeroot.
Wiktionary
turmeric paper
n. (context chemistry English) Paper impregnated with turmeric and used as a test for alkaline substances, by which it is changed from yellow to brown.