/ Dictionary / Index P pathway: Meaning and Definition of Find definitions for: path•way Pronunciation: (path'wā", päth'-), [key] — n. a path, course, route, or way. a sequence of reactions, usually controlled and catalyzed by enzymes, by which one organic substance is converted to another. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: pathway (Thesaurus) pathosis -pathy Related Content Daily Word Quiz: fervor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language