/ Dictionary / Index D Dalton System: Meaning and Definition of Find definitions for: Dal'ton Sys"tem Pronunciation: [key] a method of progressive education whereby students contract to carry through on their own responsibility the year's work as divided up into monthly assignments. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Dalton's law Daly Related Content Daily Word Quiz: portent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language