septēnārĭus — Lewis & Short
septēnārĭus, a, um, adj.septem,
I containing seven, consisting of seven, septenary:
numerus,the number seven, Plin. 11, 36, 43, § 120; Gell. 3, 10, 1 sq.; Macr. Somn. Scip. 1, 6:
versus,consisting of seven feet, Diom. p. 514 P.; also absol., a verse consisting of seven feet:
cum tam bonos septenarios fundat ad tibiam,Cic. Tusc. 1, 44, 107:
synthesis,a service of seven goblets, Mart. 4, 46, 15: fistula, of seven quadrants (or quarter-digits) in diameter, Front. Aquaed. 25; 41.