carbonometern.
/ˌkɑːbəˈnɒmᵻtə/, U.S. /ˌkɑrbəˈnɑmədər/ΚΠ
1833 G. Fairholme in London & Edinb. Philos. Mag. 3 249 If..we find an insuperable argument against the theory of a slow deposition..in these entire trees which intersect various parts of the coal-measures, to what species of action are we to attribute the rapidity of formation which these carbonometers, if I may so call them, so plainly indicate?
2. An instrument for detecting or measuring (excess) carbon dioxide in air. rare.
ΘΚΠ
the world > matter > gas > [noun] > measurement of specific properties of > instruments for
aerometer1670
manometer1730
eudiometer1777
anthracometer1799
carbonometer1844
diffusiometer1857
diffusimeter1887
katharometer1917
1844 D. B. Reid Illustr. Theory & Pract. Ventilation p. xv In Mines,..the use of a Carbonometer, or some equivalent instrument.
1902 E. S. Downs U.S. Patent 690,409 1/1 By providing the device with a scale it becomes for all practical purposes a carbonometer.
1965 Calcutta Med. Jrnl. 62 12/2 Oximeter determines the oxygen saturation of the blood, carbonometer regulates the amount of carbon dioxide exhaled.
This entry has been updated (OED Third Edition, December 2008; most recently modified version published online December 2021).
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n.1833