/ Dictionary / Index H hebdomad: Meaning and Definition of Find definitions for: heb•do•mad Pronunciation: (heb'du-mad"), [key] — n. the number seven. a period of seven successive days; week. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: hebdomad (Thesaurus) Hebbel hebdomadal Related Content Daily Word Quiz: pundit Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language