/ Dictionary / Index D dilatometer: Meaning and Definition of Find definitions for: dil•a•tom•e•ter Pronunciation: (dil"u-tom'i-tur), [key] — n. Physics. a device for measuring expansion caused by changes in temperature in substances. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. dilative dilator Related Content Daily Word Quiz: knead Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language