a. [ L. septenairus, from septeni seven each, septem seven: cf. F. septénaire. See Seven. ] 1. Consisting of, or relating to, seven; as, a septenary number. I. Watts. [ 1913 Webster ]

2. Lasting seven years; continuing seven years. “Septenary penance.” Fuller. [ 1913 Webster ]

n. The number seven. [ R. ] Holinshed. [ 1913 Webster ]