Spectrophotometry, Infrared

**Definition:** Spectrophotometry in the infrared region, usually for the purpose of chemical analysis through measurement of absorption spectra associated with rotational and vibrational energy levels of molecules. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)

**Tree numbers:** - E05.196.712.726.676 - E05.196.867.826.676

**Synonyms:** - IR Spectra - Infrared Spectrophotometry