## quadrantal

Origin

Adjective

(*not comparable*)

- (geometry) Of or relating to a quadrant, or included in the fourth part of a circle.
*quadrantal space; quadrantal triangle; quadrantal versor*

Origin

Latin *quadrantalis* (“containing the fourth part of a measure”).

## quadrantal

Variant of quadrant

noun

- a fourth part of the circumference of a circle; an arc of 90°
- a quarter section of a circle
- any piece or part shaped like a quarter section of a circle
- an instrument similar to the sextant in design and function, and superseded by it
- Geom. any of the four parts formed by rectangular coordinate axes on a plane surface

Origin of quadrant

Middle English ; from Classical Latin*quadrans,*fourth part ; from

*quadrare:*see quadrate

*Related Forms:*

- quadrantal
adjective