Definition of photodensitometer in English:

photodensitometer

noun

  • An instrument for measuring the density of a photographic negative or the opacity of a fluid.

Origin

1920s; earliest use found in Journal of the Optical Society of America. From photo- + densitometer.

Pronunciation

photodensitometer

/ˌfəʊtə(ʊ)dɛnsɪˈtɒmɪtə/