Pronunciation: -f ō - ' tä-m ə -t ə r
Function: noun
Etymology: International Scientific Vocabulary
Date: 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 \ - ˌ f ō -t ə - ' me-trik \ adjective
– mi · cro · pho · to · met · ri · cal · ly \ -tri-k( ə -)l ē \ adverb
– mi · cro · pho · tom · e · try \ -f ō - ' tä-m ə -tr ē \ noun