Gasometer :: Gasometer (n.) An apparatus for holding and measuring of gas; in gas works, a huge iron cylinder closed at one end and having the other end immersed in water, in which it is made to rise or fall, according to the volume of gas it contains, or the pressure required..
Gasometrical :: Gasometrical (a.) Of or pertaining to the measurement of gases; as, gasometric analysis..
Gasometry :: Gasometry (n.) The art or practice of measuring gases; also, the science which treats of the nature and properties of these elastic fluids..