Bible Dictionaries
Echometry

Webster's Dictionary

(1):

(n.) The art of constructing vaults to produce echoes.

(2):

(n.) The art of measuring the duration of sounds or echoes.

Bibliography Information
Webster, Noah. Entry for 'Echometry'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​e/echometry.html. 1828.