/ Dictionary / Index A absorptiometer: Meaning and Definition of Find definitions for: ab•sorp•ti•om•e•ter Pronunciation: (ab-sôrp"shē-om'i-tur, -zôrp"-), [key] — n. a photoelectric instrument for measuring the concentration of a substance, as a transparent solution, by its absorption of monochromatic light. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. absorptance absorption Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language