Definition of tetrachord
English to English noun - A scale series of four sounds, of which the extremes, or first and last, constituted a fourth. These extremes were immutable; the two middle sounds were changeable.
source: Webster 1913
Visual Synonyms 
Nearby Word
tetrachord, trichord, tetrasaccharide, trackroad, trisaccharide, trichiuroid, trichiuridae, treasured, trousered, tressured, turkey red, thoroughwort, thoracic aorta, torchwort
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