The Collaborative International Dictionary
Gravimetrically
Gravimetric \Grav"i*met"ric\, a. (Chem.) Of or pertaining to measurement by weight; measured by weight. -- Grav"i*met"ric*al*ly, adv.
Gravimetric analysis (Chem.), analysis in which the amounts of the constituents are determined by weight; -- in distinction from volumetric analysis.
Wiktionary
gravimetrically
adv. 1 (context chemistry English) Using a gravimetric method. 2 (context geology English) Using a gravimeter.