A bottle with an outlet near the bottom and an adjustable glass tube passing through a cork in the neck, which if filled to above the bottom of the tube gives a flow of constant head equal to the height of the bottom of the tube above the outlet.
Origin
Mid 19th century.
Definition of Mariotte flask in US English:
Mariotte flask
(also Mariotte's flask)
noun
Physics
A bottle with an outlet near the bottom and an adjustable glass tube passing through a cork in the neck, which if filled to above the bottom of the tube gives a flow of constant head equal to the height of the bottom of the tube above the outlet.