/ Dictionary / Index N National Science Foundation: Meaning and Definition of Find definitions for: Na'tional Sci'ence Founda"tion Pronunciation: [key] — U.S. Govt. U.S. Govt. an independent agency of the executive branch, created in 1950, that promotes and supports research and education in the sciences. Abbr.: NSF Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. National Recovery Administration national seashore Related Content Daily Word Quiz: fidelity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language