IPA: /ˈɡæʃˌhoʊldər/
KK: /ˈɡæʃˌhoʊldər/
A large container used to store gas, especially fuel gas, often shaped like a cylinder and can expand or contract.
The city installed a new gasholder to ensure a steady supply of gas for heating.
Gasholder → It is formed from "gas" (from Latin *gas*, meaning vapor or air) and "holder" (from Old English *holdan*, meaning to keep or hold). A gasholder is a device that holds or stores gas.
Think of a device that 'holds' ('holder') 'gas' — that's what a gasholder does.