n. (Physics) Art or process of using a spectrometer, of any type; -- when used alone, it usually refers to the use of a spectrometer using light in the visible, infrared, or ultraviolet region. -- Spec`tro*met"ric a. [Webster 1913 Suppl. +PJC]
mass spectrometry, the art or process of using a mass spectrometer to analyse chemical samples. [PJC]