tetragonal

adjective
UK /tɛˈtræɡənəl/
US /tɛˈtræɡənəl/

Having four sides or shaped like a square.

The crystal has a tetragonal shape with four equal sides.


OTHER MEANINGS

2. Relating to a crystal system with three axes at right angles, two of equal length.

The mineral crystallizes in the tetragonal system.

3. Having four parts or divisions.

The tetragonal arrangement of petals was easy to see.

4. In botany, having four angles or corners.

The stem is tetragonal in cross-section.