(~s)
A ~ is an instrument used for measuring angles, for example between the sun and the horizon, so that the position of a ship or aeroplane can be calculated.
N-COUNT
(~s)
A ~ is an instrument used for measuring angles, for example between the sun and the horizon, so that the position of a ship or aeroplane can be calculated.
N-COUNT
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012