Dictionary

hebdomad

noun heb·do·mad \ˈheb-də-ˌmad\

Definition of HEBDOMAD

1
:  a group of seven
2
:  a period of seven days :  week

Origin of HEBDOMAD

Latin hebdomad-, hebdomas, from Greek, from hebdomos seventh, from hepta seven — more at seven
First Known Use: 1545

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