'Gasometer' definitions:

Definition of 'gasometer'

noun

A meter for measuring the amount of gas flowing through a particular pipe [syn: gas meter, gasometer]

noun

A large gas-tight spherical or cylindrical tank for holding gas to be used as fuel [syn: gas holder, gasometer]

From: GCIDE

Gasometer \Gas*om"e*ter\ (? or ?), n. [Gas + -meter. Cf. F. gazom[`e]tre.] 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. Gasometric