acidimetern.
/ˌasᵻˈdɪmᵻtə/, U.S. /ˌæsəˈdɪmədər/ Chemistry.
An instrument (or occasionally other means) for measuring the strength of acids; esp. (in later use) an electronic device for indicating the pH of a sample.
ΚΠ
1817 A. Ure in Q. Jrnl. Sci. & Arts Oct. 118 On my acidimeter one per cent. of deterioration could not fail to be detected, even by those ignorant of science.
1839 D. B. Reid Elements Chem. (ed. 3) 863 Such instruments are termed acidimeters when charged with alkali for ascertaining the value of acids.
1918 J. L. Sammis Decker's Cheese Making (ed. 6) 196 When the curd is first matted, its acidity is low, as shown by the hot iron test or acidimeter.
1966 Farmer wants Wife (Farmers Weekly Farm Women's Club) 65 Where grandmother used to ‘try’ the cheese (to know whether it was ready for grinding) by touching a hot poker with a piece of curd,..today this testing is done by placing a spot of whey in an acidimeter.
2007 Chem. Engin. Jrnl. 132 228/1 The measurement of pH value was performed by acidimeter.
This entry has been updated (OED Third Edition, September 2009; most recently modified version published online December 2021).
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