Breadcrumb Home > Dictionary > Index N New Thought: Meaning and Definition of Find definitions for: New' Thought' Pronunciation: [key] a system of doctrine and practice originating in the 19th century and stressing the power of thought to control physical and mental events. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. new thing newton ✖ Related Content Daily Word Quiz: umbrage Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language