1. A quarter of the circumference of a circle
   - quarter-circle 
2. Any of the four areas into which a plane is divided by two orthogonal coordinate axes 
3. The area enclosed by two perpendicular radii of a circle 
4. A measuring instrument for measuring altitude of heavenly bodies

Derived forms: quadrants

Type of: area, country, line, measuring device, measuring instrument, measuring system

Encyclopedia: Quadrant

• trifoliated
• trifoliolate
• trifoliolate leaf
• Trifolium
• Trifolium alpinum
• Trifolium dubium
• Trifolium incarnatum
• Trifolium pratense
• Trifolium reflexum
• Trifolium repens
• Trifolium stoloniferum
• triforium
• triform
• trifurcate
• trifurcation
• trig
• Triga
• trigeminal
• trigeminal nerve
• trigeminal neuralgia
• trigeminus
• trigger
• trigger off
• trigger-happy
• triggerfish