/ gæˈsɒmɪtə(r); NAmE -ˈsɑːm-/ (also gas·hold·er ) noun
a very large round container or building in which gas is stored and from which it is sent through pipes to other buildings
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WORD ORIGIN
late 18th cent. (in the sense container for holding or measuring a gas ): from French gazomètre , from gaz gas + -mètre (instrument) measuring.