IPA: /ɡæˈzɒmətə/
KK: /gæˈzɑːmətər/
A device used to measure the amount of gas, often found in laboratories or industrial settings.
The scientist used a gasometer to accurately measure the volume of gas produced in the reaction.
Gasometer → It is formed from "gas" (from German *Gas*, meaning a state of matter that is neither solid nor liquid) and "-meter" (from Greek *metron*, meaning measure). The word refers to a device that measures the amount of gas.
Think of a device that 'measures' ('-meter') a state of matter called 'gas' — that's what a gasometer does.