/ Dictionary / Index P phanotron: Meaning and Definition of Find definitions for: phan•o•tron Pronunciation: (fan'u-tron"), [key] — n. Electronics. a hot-cathode gas diode. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. phano phantasize Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language