/ Dictionary / Index A azimuthal quantum number: Meaning and Definition of Find definitions for: azimuth'al quan'tum num"ber Pronunciation: [key] — Physics. Physics. the quantum number that designates the orbital angular momentum of a particular quantum state of an electron in an atom and that assumes integral values from zero to one less than the value of the principal quantum number. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. azimuthal equidistant projection azimuth bar Related Content Daily Word Quiz: pristine Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language