[ ˌju:dɪ'ɒmɪtə ]
■ noun Chemistry a graduated glass tube in which mixtures of gases can be made to react by an electric spark, used to measure changes in volume during chemical reactions.
Derivatives
eudiometric adjective
eudiometrical adjective
eudiometry noun
Origin
C18 (denoting an instrument used to measure amounts of oxygen, thought to be greater in fine weather): from Gk eudios 'clear, fine' (weather), from eu 'well' + dios 'heavenly'.