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.
Widmanstatten figures
-
Certain figures appearing on etched meteoric
iron; -- so called after A. B. Widmanstatten, of Vienna, who first
described them in 1808. See the Note and Illust. under Meteorite.
Widmanstatten figures meaning & definition 1 of Widmanstatten figures.
Similar Words