/ Dictionary / Index N New Mexico: Meaning and Definition of Find definitions for: New" Mex'ico Pronunciation: [key] a state in the SW United States. 1,299,968; 121,666 sq. mi. (315,115 sq. km). Cap.: Santa Fe. Abbr.: NM (for use with zip code), N. Mex., N.M. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. new math New Milford Related Content Daily Word Quiz: diligent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language