septenary

Meanings

Adjective

• Consisting of or containing seven.
• Of seventh rank or order.
• Lasting seven years; continuing seven years.

Noun

• A group of seven things.
• A period of seven years.
• The seven notes of the diatonic scale.

Origin

• From the Latin septēnārius ("consisting of seven each"), from septēnī + -ārius (whence the English suffix -ary).