from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. the quantitative analysis of electromagnetic spectra by use of a spectrophotometer; especially in order to determine the structure or quantity of a substance
from the GNU version of the Collaborative International Dictionary of English
- n. The art of comparing, photometrically, the brightness of two spectra, wave length by wave length; the use of the spectrophotometer.
- n. the art or process of measuring the degree of absorption of light at different wavelengths by a chemical substance, by means of a spectrometer or spectrophotometer. It is a technique for chemical analysis.
from The Century Dictionary and Cyclopedia
- n. The art of using the spectrophotometer.
spectro- + photometry (Wiktionary)