adjective
- taking place, coming together, or published once every seven days; weekly: hebdomadal meetings; hebdomadal groups; hebdomadal journals.
noun
- a weekly magazine, newspaper, etc.Compare diurnal(def 7).
adjective
- a rare word for weekly
“weekly,” 1816, pedantic humor, from Latin hebdomas, from Greek hebdomas “the number seven; a period of seven (days),” from hepta “seven” (from PIE *septm; see seven) + -mos, suffix used to form ordinal numbers, cognate with Latin -mus.