noun
also pic·nom·e·ter or pyk·nom·e·ter pikˈnäməd.ə(r)
Etymology: International Scientific Vocabulary pycn- + -meter
: a standard vessel often provided with a thermometer for measuring and comparing the densities of liquids or solids
• pyc·no·met·ric |piknə|me.trik adjective
• pyc·nom·e·try pikˈnämə.trē noun -es