/ Dictionary / Index A activated carbon: Meaning and Definition of Find definitions for: ac'tivated car'bon Pronunciation: [key] — Chem. Chem. a form of carbon having very fine pores: used chiefly for adsorbing gases or solutes, as in various filter systems for purification, deodorization, and decolorization. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. activated alumina activated mine Related Content Daily Word Quiz: nonchalant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language