septenary means consisting of or containing seven. Lexicurio rates it Sui generis — a strength score of 87 out of 100.
septenary is pronounced /sɛpˈtiːnəɹi/.
Etymology
From Middle English septenarie, septenary, from Classical Latin septēnārius (“consisting of seven each”), from septēnus (“seven each; seven at a time”) + -ārius (whence the English suffix -ary). With use as noun compare septēnārius (“line of seven feet; unit of seven parts; period of seven years”). By surface analysis, septen- + -ary. Doublet of septenar and septenarius.
adj
- Consisting of or containing seven.
- Of seventh rank or order.“... indeed if further evidence than that of bestial and savage counting were required to show that finger-numeration and the quinary system were not primeval, it would be afforded by the development of the senary-septenary system in so many lands.”
- Lasting seven years; continuing seven years.“Septenary penance.”
noun
- A group of seven things.
- A period of seven years.“This idea was based on the doctrine that a man's body changed its character every seven years and that his life was thus made up of ‘septenaries’.”
- The seven notes of the diatonic scale.