Breadcrumb Home > Dictionary > Index I igniter: Meaning and Definition of Find definitions for: ig•nit•er Pronunciation: (ig-nī'tur), [key] — n. a person or thing that ignites. the carborundum rod used to initiate the discharge in an ignitron tube. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: igniter (Thesaurus) ignite ignition ✖ Related Content Daily Word Quiz: sandbag Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language