The Collaborative International Dictionary
Osmometry
Osmometry \Os*mom"e*try\ ([o^]z"m[o^]m"[-e]*tr[y^] or [o^]s"m[o^]m"[-e]*tr[y^]), n. (Physics) The study of osmosis by means of the osmometer.
Wiktionary
osmometry
n. (context physics chemistry English) The measurement of osmotic pressure