-ometer
(ˈɒmɪtə(r))
the element -meter, Gr. µέτρον measure, preceded by -o, belonging to the prec. element, or merely connective (see -o1), in which form it usually appears in words from Greek, and hence in modern formations, as dampometer, gasometer, olfactometer, etc. Also as a quasi-n.
| 1856 Farmer's Mag. Jan. 63 The barometers, thermometers, saccharometers, and other ometers. |