An acid-base indicator which is colorless in acid solution, but turns pink to red as the solution becomes alkaline. It is used medicinally as a cathartic.
Johnson grass
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A tall perennial grass (Sorghum Halepense), valuable in theSouthern and Western States for pasture and hay. The rootstocks arelarge and juicy and are eagerly sought by swine. Called also Cubagrass, Means grass, Evergreen millet, and Arabian millet.
Johnson grass meaning & definition 1 of Johnson grass.
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