add. ·noun a figure of six lines.
2. hexagram ·add. ·noun in chinese literature, one of the sixty-four figures formed of six parallel lines (continuous or broken), forming the basis of the yih king, or "book of changes.".
3. hexagram ·add. ·noun a figure composed of two equal triangles intersecting so that each side of one triangle is parallel to a side of the other, and the six points coincide with those of a hexagon.