MICROPHOTOMETER

[mi.cro.pho.tom.e.ter] n [ISV] (1899): an instrument for measuring the amount of light transmitted or reflected by small areas or for measuring the relative densities of spectral lines on a photographic film or plate -- mi.cro.pho.to.met.ric adj -- mi.cro.pho.to.met.ri.cal.ly adv -- mi.cro.pho.tom.e.try n