[ ˌnɛfə'lɒmɪtə ]
■ noun an instrument for measuring the size and concentration of suspended particles by means of light scattering.
Origin
C19: from Gk nephelē 'cloud' + -meter .
NEPHELOMETER
Meaning of NEPHELOMETER in English
Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004