volumeter
nounAny of several instruments for measuring the volume of liquids, solids, or gases.
nounIn chem. and physics, broadly, any instrument for measuring the volumes of gases, as a graduated glass tube in which a gas may be collected over water or mercury, the gas displacing the liquid as it enters the vessel, and the volume displaced being indicated by the graduations.
nounSame as
An instrument for measuring the volumes of gases or liquids by introducing them into a vessel of known capacity.
nounAny instrument used to measure the
a meter to measure the volume of gases, liquids, or solids (either directly or by displacement)