hebdomadal
adjective
[ hɛbˈdɒməd(ə)l ]
• weekly (used especially of organizations that meet weekly).
• "Oxford University's Hebdomadal Council"
Origin:
early 17th century (in the sense ‘lasting seven days’): from late Latin hebdomadalis, from Greek hebdomas, hebdomad- ‘the number seven, seven days’, from hepta ‘seven’.
