A group of seven.
A period of seven days; a week.
Seven days; a week.
(Gnosticism) A group of seven superhuman beings.
Origin of hebdomad
- Latin hebdomas hebdomad- the number seven from Greek from hebdomos seventh from hepta seven septm̥ in Indo-European roots
From American Heritage Dictionary of the English Language, 5th Edition
- From Late Latin hebdomas, from Ancient Greek ἑβδομάς (hebdomas, “group of seven”), from ἑπτά (hepta, “seven”)