See quadrant.
·adj Of or pertaining to a sine; employing, or founded upon, sines; as, a sinical quadrant. ...
Webster's Dictionary of the English Language
·noun The fourth part; the quarter. II. Quadrant ·noun The quarter of a circle, or of the circumfer...
A reflecting instrument used to take the altitude above the horizon of the sun, moon, or stars at se...
The Sailor's Word-Book
·- A thin quadrant, made of brass, wood, ·etc., showing a stereographic projection on the plane of t...
See quadrant. ...
A kind of stereographic projection on the plane of the equinoctial; the eye is supposed in one of th...
The old name of Jacob's cross-staff. ...