n. [ L. acetum vinegar + -meter: cf. F. acétimètre. ] An instrument for estimating the amount of acetic acid in vinegar or in any liquid containing acetic acid. [ 1913 Webster ]
n. [ LL. altimeter; altus high + metrum, Gr. &unr_;, measure: cf. F. altimètre. ] An instrument for taking altitudes, as a quadrant, sextant, etc. Knight. [ 1913 Webster ]