SG Heritage Dictionary

Torricellian [Adjective] Webster's Dictionary 1828

1. Pertaining to Torricelli, an Italian philosopher and mathematician, who discovered the true principle on which the barometer is constructed.

2. Torricellian tube, is a glass tube thirty or more inches in length, open at one end, and hermetically sealed at the other.

3. Torricellian vacuum, a vacuum produced by filling a tube with mercury, and allowing it to descend till it is counterbalanced by the weight of an equal column of the atmosphere, as in the barometer.

Torricellian [Adjective] Webster's Dictionary 1913

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.