/ Dictionary / Index P pycnometer: Meaning and Definition of Find definitions for: pyc•nom•e•ter Pronunciation: (pik-nom'i-tur), [key] — n. 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. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. pycno- pycnostyle Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language