noun a plane figure having four sides and angles; a quadrangle, as a square, a rhombus, ·etc.
2. tetragon ·noun an aspect of two planets with regard to the earth when they are distant from each other ninety degrees, or the fourth of a circle.
noun a plane figure having four sides and angles; a quadrangle, as a square, a rhombus, ·etc.
2. tetragon ·noun an aspect of two planets with regard to the earth when they are distant from each other ninety degrees, or the fourth of a circle.
Webster English vocab. Английский словарь Webster. 2012