/ Dictionary / Index N normal orthogonal: Meaning and Definition of Find definitions for: nor'mal orthog'onal Pronunciation: [key] — Math. Math. orthonormal. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. normal magnification normal pentane Related Content Daily Word Quiz: digression Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language