absorptiometer
Pronunciation:
/əbˌsɔːp.ʃɪˈɒ.mɪ.ɚ//æbˌsɔɹp.tiˈɑm.ə.dɚ/noun
Definitions
A instrument that computes the absorption rate by measuring the pressure of the gas; a colorimeter for liquids.
An instrument used to measure the amount of radiation or light absorbed.