Breadcrumb Home > Dictionary > Index A absorption coefficient: Meaning and Definition of Find definitions for: absorp'tion coeffi"cient Pronunciation: [key] — Physics, Optics. Physics,Optics. a measure of the rate of decrease in the intensity of electromagnetic radiation, as light, as it passes through a given substance. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. absorption band absorption dynamometer TrendingHere are the facts and trivia that people are buzzing about. Chinese New Year History, Meaning, and Celebrations Current Events This Week: February 2024 Valentine's Day Valentine's Day History Mardi Gras 30 "Charlie and the Chocolate Factory" Quotes ✖ Related Content Daily Word Quiz: occultation Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language