Source : Webster's Revised Unabridged Dictionary (1913)

Spectrometry \Spec*trom"e*try\, n. (Physics)
   Art or process of using the spectrometer, or of measuring
   wave lengths of rays of a spectrum. -- {Spec`tro*met"ric}, a.

Source : WordNet®

spectrometric
     adj : of or relating to or involving spectrometry