hydrotimetern.
/hʌɪdrəʊˈtɪmɪtə/ An apparatus for testing the hardness of water, consisting of a graduated tube to measure the water to be tested, and a tubular graduated burette containing a standard soap-solution, with which the test is made.
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hydrotimeter1886
1886 in New Sydenham Soc. Lexicon
1890 Cent. Dict. (at cited word) In saying that ‘the water does not exceed 8 degrees hydrotimeter’, it is meant that not more than 8 divisions of the standard soap-solution delivered from the hydrotimeter is necessary to make a permanent lather with 40 cubic centimeters of the water in question.
Derivatives
hydrotiˈmetric adj. (see quot. 1886).
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hydrotimetric1886
1886 New Sydenham Soc. Lexicon H[ydrotimetric] fluid, the test-solution used in Hydrotimetry..Hydrotimetry, the process of testing the properties of water,..based on Clarke's soap test for the hardness of water.
hydroˈtimetry n.
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hydrotimetry1886
1886*hydrotimetry [see hydrotimetric adj.].
This entry has not yet been fully updated (first published 1899; most recently modified version published online June 2021).
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n.1886- pasteboardlike
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