1. relating to or having eight parts or divisions
Usage: technical
2. of or relating to an octant (one-eighth of a circle or sphere)
Usage: geometry; navigation

Examples

• The octantal symmetry of the crystal was clearly visible under the microscope.
• Navigation instruments often use octantal divisions for precise measurements.
• The architect designed an octantal dome with eight equal sections.
• The octantal coordinate system divides space into eight regions.
• Each octantal segment of the compass rose represents 45 degrees.