Dictionary.com
definitions

osmometer

[oz-mom-i-ter, os-]
noun
  1. an instrument used in osmometry.

Origin of osmometer

First recorded in 1850–55; osmo- + -meter
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for osmometer

osmometer

noun
  1. an instrument for measuring osmotic pressure
Derived Formsosmometric (ˌɒzməˈmɛtrɪk), adjectiveosmometrically, adverbosmometry, noun

Word Origin for osmometer

C20: from osmo (sis) + -meter
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012