Relating to or occurring during a period of seven days; connected to weekly cycles or hebdomads.
From 'hebdomad' + '-arian' (relating to). A rare scholarly form found in theological and historical texts.
The suffix '-arian' creates adjectives meaning 'believing in' or 'relating to'—so 'hebdomarian' literally means 'pertaining to the group-of-seven philosophy,' a beautifully specific word.
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