Definition of quintant in English:

quintant

noun

  • 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).

Origin

Late 17th century (in an earlier sense). From classical Latin quīntus fifth + -ant, after quadrant and sextant.

Pronunciation

quintant

/ˈkwɪntənt/