rhombical
/ˈrɒmbɪkəl/Definitions
1. adjective
relating to or resembling a rhombus, especially in having equal adjacent sides and opposite angles of equal size.
“The rhombical shape was a key feature of the ancient Greek architecture.”
2. noun
A rhombus, especially one that is equilateral.
“The artist used a rhombical shape in her painting to create a sense of symmetry.”