or  flu*o*rim*e*ter  n :  an instrument for measuring fluorescence that is used esp. to determine intensities of radiations (as X rays) from the fluorescence they produce or from concentrations of substances (as uranium or vitamins of the B complex) capable of forming fluorescent compounds flu*o*ro*met*ric or  flu*o*ri*met*ric  adj flu*o*rom*e*try or  flu*o*rim*e*try  n pl  -tries  
 
 
 
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