Answer: quadrant

AnswerCrossword Clue
QUADRANTOne-fourth of a circle
QUADRANTPart of a circle.
QUADRANTAltitude finder.
QUADRANTNavigator's aid
QUADRANT90-degree arc
QUADRANTMoon or horoscope division
quadranta quarter section of a circle
quadrantinstrument for measuring altitudes
quadrantarc of 90┬░