† echometryn.

Etymology: modern < Greek ἠχώ echo n., or ἦχος sound + -metry comb. form. Littré has French échométrie ‘art de calculer, de combiner la réflexion des sons’, = sense 1 below.

? Obsolete.

1. ‘The art of making vaults or arches so as to produce an artificial echo.’

ΚΠ

1818 in H. J. Todd Johnson's Dict. Eng. Lang.

2. The art of measuring the duration of sound.

ΚΠ

1847 in J. Craig New Universal Dict.

This entry has not yet been fully updated (first published 1891; most recently modified version published online June 2019).

单词	echometry
释义	† echometryn. Etymology: modern < Greek ἠχώ echo n., or ἦχος sound + -metry comb. form. Littré has French échométrie ‘art de calculer, de combiner la réflexion des sons’, = sense 1 below. ? Obsolete. 1. ‘The art of making vaults or arches so as to produce an artificial echo.’ ΚΠ 1818 in H. J. Todd Johnson's Dict. Eng. Lang. 2. The art of measuring the duration of sound. ΚΠ 1847 in J. Craig New Universal Dict. This entry has not yet been fully updated (first published 1891; most recently modified version published online June 2019). < n.1818
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