septic

adjective

sep·​tic ˈsep-tik How to pronounce septic (audio)
1
: of, relating to, or causing putrefaction
2
: relating to, involving, caused by, or affected with sepsis
septic patients
3
: used for sewage treatment and disposal
a septic system
also : of or relating to a septic system
septic effluents

Examples of septic in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Repairs were needed on the heating and septic systems, and there was some termite damage. Michele Lerner, New York Times, 21 May 2026 Still, officials warn that pollution, aging septic systems, and everyday human activity continue to threaten one of South Florida's most important ecosystems. Ivan Taylor, CBS News, 20 May 2026 Video of the crash taken by a bystander shows the septic truck crossing the railroad tracks just as the oncoming Norfolk Southern train T-boned the vehicle. Louis Casiano, FOXNews.com, 18 May 2026 Her son Daniel, however, told TMZ that Betty suffered a number of septic infections before her death, and had a serious fall approximately three weeks before her death. Alex Gurley, PEOPLE, 11 May 2026 See All Example Sentences for septic

Word History

Etymology

Latin septicus, from Greek sēptikos, from sēpein to putrefy

First Known Use

1597, in the meaning defined at sense 1

Time Traveler
The first known use of septic was in 1597

Browse Nearby Words

Cite this Entry

“Septic.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/septic. Accessed 28 May. 2026.

Medical Definition

septic

adjective
sep·​tic ˈsep-tik How to pronounce septic (audio)
1
2
: relating to, involving, caused by, or affected with sepsis
septic complications
septic arthritis
septic patients

More from Merriam-Webster on septic

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster