SEPTENARY Meaning of SEPTENARY in English adj. & n.adj. of seven, by sevens, on the basis of seven. n. (pl. -ies) 1 a group or set of seven (esp. years). 2 a septenarius. [ L septenarius (as SEPTENARIUS) ] Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012