an instrument for producing or recording a spectrum and measuring the photometric intensity of each wavelength present, esp such an instrument used for infrared, visible, and ultraviolet radiation
See also spectrometer
Derived forms
spectrophotometric (ˌspɛktrəʊˌfəʊtəˈmɛtrɪk)
adjective
spectrophotometry (ˌspectrophoˈtometry)
noun
Word origin
C19: from spectro- + photo- + -meter
spectrophotometer in American English
(ˌspɛktrəfoʊˈtɑmətər)
noun
an instrument used for measuring the transmission or reflection of light by comparing various wavelengths of the light