Also found in: Thesaurus, Encyclopedia.


(General Physics) an instrument that measures the intensity of light transmitted or reflected by very small areas


(ˌmaɪ kroʊ foʊˈtɒm ɪ tər)

a photometer adapted for measuring the intensity of light emitted, transmitted, or reflected by minute objects.
mi`cro•pho`to•met′ric (-təˈmɛ trɪk) adj.
mi`cro•pho`to•met′ri•cal•ly, adv.
mi`cro•pho•tom′e•try, n.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.microphotometer - special kind of densitometer that measures density variations over a very small area
densitometer - a measuring instrument for determining optical or photographic density
References in periodicals archive ?
Lactate was measured in a microphotometer (DR LANGE, Berlin) with commercially available kits (LCQ 140, DR LANGE, Berlin).
Vitrinite reflectance (Ro) was measured by an oil immersion lens and a Leixa MPV Compact II reflected light microscope fitted with a microphotometer. Measured Ro values in six wells are primarily between 0.5% and 1.2%, indicating that the Eocene source rocks have entered the mature generation stage (Figure 7).