/ Dictionary / Index N noradrenaline: Meaning and Definition of Find definitions for: nor•a•dren•a•line Pronunciation: (nôr"u-dren'l-in, -ēn"), [key] — n. norepinephrine. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: noradrenaline (Thesaurus) NORAD Norbert Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language