Entry 1 sense Webster, 1913 Osmometry /(ŏz"mŏm"ē̇*try̆ [or] ŏs"mŏm"ē̇*try̆)/ · Os·mom·e·try · IPA 01 n. The study of osmosis by means of the osmometer. 1. The study of osmosis by means of the osmometer.(Physics)