chronometer
US /krəˈnɑː.mə.t̬ɚ/
UK /krəˈnɑː.mə.t̬ɚ/

1.
cronômetro
an instrument for measuring time, especially one designed to keep accurate time in spite of motion or variations in temperature, humidity, and air pressure.
:
•
The ship's captain relied on the chronometer for precise navigation.
O capitão do navio confiava no cronômetro para uma navegação precisa.
•
A marine chronometer is essential for determining longitude at sea.
Um cronômetro marítimo é essencial para determinar a longitude no mar.