Thorough Bass means either what has, as figured bass, been explained at ACCOMPANIMENT—a bass voice-part written at length, with numerals written below (or above) it to indicate the chords of the harmony; or, more loosely, the science of harmonic composition. See HARMONY, COUNTERPOINT.
Thorough Bass
Chambers's Encyclopaedia, Volume 10: Swastika to Zyrianovsk and Index, p. 187
Source scan(s): p. 0206