{ Heb*dom"a*dal (?), Heb*dom"a*da*ry (?), } a. [L. hebdomadalis, LL. hebdomadarius: cf. F. hebdomadaire.] Consisting of seven days, or occurring at intervals of seven days; weekly.

Heb*dom"a*da*ry (?), n. [LL. hebdomadarius: cf. F. hebdomadier.] (R. C. Ch.) A member of a chapter or convent, whose week it is to officiate in the choir, and perform other services, which, on extraordinary occasions, are performed by the superiors.