Learn how to say Septic correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word septic:
1(chiefly of a wound or a part of the body) infected with bacteria:
his feet had gone septic
2 [attributive] denoting a drainage system incorporating a septic tank.
a drainage system incorporating a septic tank.
early 17th century: via Latin from Greek sēptikos, from sēpein ‘make rotten’