meridian
US /məˈrɪd.i.ən/
UK /məˈrɪd.i.ən/

1.
meridiano
a circle of constant longitude passing through a given place on the earth's surface and the terrestrial poles
:
•
The Prime Meridian passes through Greenwich, London.
O Meridiano de Greenwich passa por Greenwich, Londres.
•
Navigators use meridians to determine longitude.
Navegadores usam meridianos para determinar a longitude.