1. relating to or forming a quarter of a circle or sphere
Usage: geometry; technical
2. relating to a quadrant or quarter section
Usage: technical

Examples

• The quadrantal arch spanned exactly 90 degrees of the circle.
• Engineers measured the quadrantal distance on the navigation chart.
• The quadrantal error affected the compass readings in that region.
• The telescope’s quadrantal mount allowed precise angular adjustments.
• Surveyors divided the area into quadrantal sections for mapping.
• The quadrantal deviation was calculated for magnetic compass correction.