The Collaborative International Dictionary
Acetimeter
Acetimeter \Ac`e*tim"e*ter\, n. [L. acetum vinegar + -meter: cf. F. ac['e]tim[`e]tre.] An instrument for estimating the amount of acetic acid in vinegar or in any liquid containing acetic acid.
Wiktionary
acetimeter
n. An instrument for estimating the amount of acetic acid in vinegar