quadrant

Từ điển Oxford Learners Wordfinder Dictionary

noun

1. a quarter of the circumference of a circle
• Syn:
quarter-circle
• Hypernyms:
line
2. any of the four areas into which a plane is divided by two orthogonal coordinate axes
• Hypernyms:
area, country
3. the area enclosed by two perpendicular radii of a circle
• Hypernyms:
area, country
4. a measuring instrument for measuring altitude of heavenly bodies
• Hypernyms:
measuring instrument, measuring system, measuring device