octant

• Instrumento de medição usado para determinar a altura de corpos celestes, semelhante ao sextante, mas calibrado para 45 graus.

A noun referring to a measuring instrument used to determine the altitude of celestial bodies, similar to a sextant but calibrated to 45 degrees.

1. Navigational instrumentC1formalscientific

   A measuring instrument used in astronomy and navigation to measure the altitude of celestial bodies, similar to a sextant but with a 45-degree arc.

   Oitante

   • The sailor used an octant to determine the ship's latitude.
   • Before the sextant, the octant was a primary tool for celestial navigation.
   • He carefully adjusted the octant to measure the angle of the North Star.