Torricellian vacuum Meaning, Definition & Usage

Definitions
  1. (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.
Definitions
  1. . See under Torricellian.

Webster 1913