Of or pertaining to sepsis. / Causing sepsis or putrefaction. / Of or pertaining to sewage or the disposal of sewage.

A substance that causes sepsis or putrefaction. / A septic tank; a system for the disposal of sewage into a septic tank, a septic system.

(mathematics) A mathematical object (function, curve, surface, etc.) of degree seven.

(mathematics) Of the seventh degree or order.

(UK, Australia, New Zealand, rhyming slang, derogatory) An American, a Yank.

Happening in the middle of September.

In the middle of September.

Any time in the middle of September.

Synonym of seventysomething: a person between 70 and 79 years old.

Of or related to seventysomethings.