noun
: a triangular or a trapezoidal or trapeziform figure on which vowels are charted according to the position of the part of the tongue that is highest in their articulation
noun
: a triangular or a trapezoidal or trapeziform figure on which vowels are charted according to the position of the part of the tongue that is highest in their articulation
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012