turmeric paper


noun

paper treated with turmeric: used to indicate the presence of alkalis, which turn it brown, or of boric acid, which turns it reddish-brown.

Origin of turmeric paper

First recorded in 1800–10

British Dictionary definitions for turmeric paper

turmeric paper

noun

chem paper impregnated with turmeric used as a test for alkalis, which turn it brown, and for boric acid, which turns it reddish brown