spectrophotometer noun. [,spɛktrǝ(ʊ)fǝʊ'tɒmɪtǝ] L19.
[from SPECTRO- + PHOTOMETER.]
An instrument incorporating a photometer and designed to measure the relative intensity of light (usu. transmitted or emitted by a substance under study) at different wavelengths in a particular region of the spectrum.

■ spectrophoto'metric adjective of, pertaining to, or employing spectrophotometry L19.

■ spectrophoto'metrically adverb by means of spectrophotometry L19.

■ spectrophotometry noun the technique of using a spectrophotometer L19.

[TahlilGaran] English Dictionary ▲