One of the mysteries of the English language finally explained.
An instrument formerly used for making angular measurements, especially in astronomy and navigation, analogous to a sextant but having a notional arc of 72 degrees rather than 60 degrees, and so measuring up to 72 degrees (or 144 if the instrument has a mirror).
Late 17th century (in an earlier sense). From classical Latin quīntus fifth + -ant, after quadrant and sextant.
In this article we explore how to impress employers with a spot-on CV.