[f. Gr. τρόμος trembling + -METER.] An instrument for measuring or detecting faint earth-tremors. Hence Tromometric, Tromometrical adjs., of or pertaining to the tromometer or its use; Tromometry, the measuring of earth-tremors, the scientific use of the tromometer.
1878. Nature, 12 Sept., 533/1. The instruments, particularly the tromometer, were continually agitated.
1883. J. Milne, in Trans. Seismol. Soc. Japan, VII. I. 13. As to the cause of tromometric movements we have a field for speculation.
1887. G. H. Darwin, in Fortn. Rev., Feb., 271. The ‘normal tromometer’ of Bertelli … is a simple pendulum,… with an arrangement for observing the dance of the pendulum-bob with a microscope.
1895. Funk’s Stand. Dict., Tromometry.
1898. Nature, 1 Dec., 104/2. The subject to which he [Rossi] devoted the greatest attention was perhaps tromometry, in connection with which he devised many instruments.
1901. Daily Record & Mail, 22 July, 7. ‘Tromometric’ observations (states ‘Science Siftings’) have been made at the observatory near the summit of Mount Etna.
