What does the word quadrant mean?

Usage examples for quadrant

  1. During his stay at Augsburg he constructed a quadrant of fourteen cubits radius, on which were indicated the single minutes of a degree; he made many valuable observations with this instrument, which he used in combination with a large sextant. – The Astronomy of Milton's 'Paradise Lost' by Thomas Orchard
  2. After a long chase the quadrant was recovered, but some of the smaller parts were missing. – The Life of Captain James Cook by Arthur Kitson
  3. I am being held prisoner with Cadet Roger Manning aboard the spaceship Space Knight in space quadrant four, chart C for Charley.... – Treachery in Outer Space by Carey Rockwell and Louis Glanzman