- quadrantal corrector,
- quadrantic hemianopsia,
Origin of quadrant
Examples from the Web for quadrant
Point it south and it shows you the stars and planets in that quadrant of the sky.Apps for Kids Who Love to Read: Moonbot Studios, Touch Press, and More|Malcolm Jones|December 24, 2011|DAILY BEAST
People forget all too readily, but Greenspan is a consultant to Pimco, the largest bond manager in this quadrant of the galaxy.
He was expert in the use of quadrant and sextant, and could take a lunar observation and work it out with accuracy.Siam|George B. Bacon
Pores of the same breadth as the bars, six to eight on the quadrant.
It is in use on all the ships at the present time, but it has been greatly improved, and is now called the quadrant.Discoverers and Explorers|Edward R. Shaw
Here, however, comes in now the action of the very beautiful and effective piece of mechanism, "Roberts' quadrant" (see Fig. 26).The Story of the Cotton Plant|Frederick Wilkinson
Godfrey, the maker of Godfrey's Quadrant, was one of those scientific investigators, and must have been a famous "dialler."Old-Time Gardens|Alice Morse Earle
- a quarter of the circumference of a circle
- the area enclosed by two perpendicular radii of a circle and its circumference
- any of the four sections into which a plane is divided by two coordinate axes
Word Origin for quadrant
late 14c., "a quarter of a day, six hours," from Middle French quadrant, from Latin quadrantem (nominative quadrans) "fourth part," also the name of a coin worth a quarter of an as, noun use of present participle of quadrare "to make square; put in order, arrange, complete; run parallel, be exact," figuratively "to fit, suit, be proper," related to quadrus "a square," quattuor "four" (see four). The surveying instrument is first so called c.1400, because it forms a quarter circle. Related: Quadrantal.