English
acidometer
From acid + -ometer.
Formed from acid + -ometer
Proto-Indo-European *h₂eḱ- ‘sharp’
…
Proto-Italic *akēō
Latin aceō ‘to be sour’
Latin acidus ‘sour’
French acide ‘acid’
English acid
Today it means
noun A hydrometer, especially one that is used to measure the strength of an acid.
Language periods are conventional ranges, not dates for this word.
Etymograph / acidometer