Hindi tetrachord का अर्थ हिंदी में

• अर्ध-अष्टक

English tetrachord meaning in English  •  tetrachord का अर्थ अंग्रेजी में

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.