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Antiseptic

/ˌæntɪˈsɛptɪk/noun

A substance that kills or checks the microbes causing infection in living tissue.

The Greek roots

ἀντί
antí
against
+
σήπειν
sḗpein
to rot, putrefy

Literally: against rotting

The story of the word

The word is older than germ theory. It turns up in English in 1751, when putrefaction itself was the enemy and nobody could say what caused it; Joseph Lister's carbolic acid work from 1867 gave it the meaning it has now by identifying what an antiseptic actually kills. σήπειν, to rot, also gives sepsis and the septic tank, where matter is deliberately left to do exactly what the antiseptic prevents.

How it travelled
Ancient Greek → scientific coinage → English
First recorded
1751

Same family

sepsissepticasepticsepticaemia

In a sentence

She kept an antiseptic wipe in every coat pocket after the second toddler.

Built on the same root

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