/ Dictionary / Index H hebdomadal: Meaning and Definition of Find definitions for: heb•dom•a•dal Pronunciation: (heb-dom'u-dl), [key] — adj. taking place, coming together, or published once every seven days; weekly: hebdomadal meetings; hebdomadal groups; hebdomadal journals. —n. a weekly magazine, newspaper, etc. Cf. diurnal (def. 7). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: hebdomadal (Thesaurus) hebdomad hebdomadary Related Content Daily Word Quiz: lyceum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language