The Collaborative International Dictionary of English v.0.48:

Volumetric \Vol`u*met"ric\, a. [Volume + -metric.]
   Of or pertaining to the measurement of volume.
   [1913 Webster]

   Volumetric analysis (Chem.), that system of the
      quantitative analysis of solutions which employs definite
      volumes of standardized solutions of reagents, as measured
      by burettes, pipettes, etc.; also, the analysis of gases
      by volume, as by the eudiometer.
      [1913 Webster]

WordNet (r) 3.0 (2006):

volumetric
    adj 1: of or relating to measurement by volume; "volumetric
           analysis" [syn: volumetric, volumetrical]