- septetA group of seven musicians.
- sept-Seven: forming words relating to seven.
- septa-seven
- septem-Seven.
- septi-seven
- septimoleA group of seven notes to be played in the time of four or six.
- SeptimontiumA festival celebrated by the inhabitants of the seven hills where Rome would be founded.
- septrionalOf or coming from northern regions.
- septua-Seven.
- septuaryBeing seven in number.
- septuplexSevenfold; made up of seven parts.
- zetta-In the International System of Units and other metric systems of units, multiplying the unit to which it is attached by 10²¹ (a short scale sextillion or long scale trilliard).