1. a container used for determining the density of a liquid or powder, having a specific volume and often provided with a thermometer to indicate the temperature of the contained substance.

Origin of pycnometer

First recorded in 1880–85; pycno- + -meter Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for pycnometer

Historical Examples of pycnometer

British Dictionary definitions for pycnometer


  1. a small glass bottle of known volume for determining the relative density of liquids and solids by weighing
Derived Formspycnometric (ˌpɪknəˈmɛtrɪk), adjective
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