phosphoroscope

[fos-fawr-uh-skohp, -for-]

noun

an instrument for measuring the duration of evanescent phosphorescence in different substances.

Origin of phosphoroscope

First recorded in 1855–60; phosphoro- + -scope
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for phosphoroscope

phosphoroscope

noun

an instrument for measuring the duration of phosphorescence after the source of radiation causing it has been removed
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012