/ Dictionary / Index H hot-cathode tube: Meaning and Definition of Find definitions for: hot'-cath'ode tube" Pronunciation: (hot'kath'ōd), [key] — Electronics. Electronics. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. hot cap hotch Related Content Daily Word Quiz: blithesome Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language