katharometerEnglishOxford Dictionary of Englishkatharometer /ˌkaθəˈrɒmɪtə / ▸ noun an instrument for detecting a gas or measuring its concentration in a mixture, by measuring changes in thermal conductivity. – ORIGIN early 20th century: from Greek katharos ‘pure’ + -meter.
EnglishOxford Dictionary of EnglishEnglishOxford Dictionary of English
