/ Dictionary / Index D dosimeter: Meaning and Definition of Find definitions for: do•sim•e•ter Pronunciation: (dō-sim'i-tur), [key] — n. a device carried on the person for measuring the quantity of ionizing radiation, as gamma rays, to which one has been exposed. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: dosimeter (Thesaurus) do-si-do dosimetry Related Content Daily Word Quiz: soporific Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language