Webster's Revised Unabridged Dictionary · 1913

Torricellian

Torricellian , adjective

Of or pertaining to Torricelli, an Italian philosopher and mathematician, who, in 1643, discovered that the rise of a liquid in a tube, as in the barometer, is due to atmospheric pressure. See Barometer.
Collocations (2)
Torricellian tube , a glass tube thirty or more inches in length, open at the lower end and hermetically sealed at the upper, such as is used in the barometer.
Torricellian vacuum (Physics) , a vacuum produced by filling with a fluid, as mercury, a tube hermetically closed at one end, and, after immersing the other end in a vessel of the same fluid, allowing the inclosed fluid to descend till it is counterbalanced by the pressure of the atmosphere, as in the barometer. — Hutton