n. a vacuum formed when mercury in a long tube closed at one end is inverted with the open end in a reservoir of mercury (the principle on which a barometer is made).
Etymology: Torricelli: see TORR
n. a vacuum formed when mercury in a long tube closed at one end is inverted with the open end in a reservoir of mercury (the principle on which a barometer is made).
Etymology: Torricelli: see TORR
Oxford English vocab. Оксфордский английский словарь. 2012