HEBDOMADALLY
hebdomadally, weekly, every week, each week
(adverb) without missing a week; “she visited her aunt weekly”
Source: WordNet® 3.1
Etymology
Adverb
hebdomadally (not comparable)
In periods of seven days; weekly.
Source: Wiktionary
Heb*dom"a*dal*ly, adv.
Definition: In periods of seven days; weekly. Lowell.
HEBDOMADAL
Heb*dom"a*dal, Heb*dom"a*da*ry, a. Etym: [L. hebdomadalis, LL.
hebdomadarius: cf. F. hebdomadaire.]
Definition: Consisting of seven days, or occurring at intervals of seven
days; weekly.
Source: Webster’s Unabridged Dictionary 1913 Edition