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.
Bacteria can enter the water due to rain runoff, failing septic systems, leaking sewer hookups and wildlife waste. Raven Brunner, PEOPLE, 14 July 2026 Any development along the unique stretch of Big Sur coastline is typically complex, but the listing suggests groundwork has been laid, including early planning related to septic and site conditions. David Caraccio updated July 13, Sacbee.com, 13 July 2026 Also called Eastern poplar, they’re related to willow trees, and their shallow roots can easily uproot sidewalks, driveways, foundations, and septic systems. Karen Brewer Grossman, Southern Living, 2 July 2026 The 35-year-old Ira Township man was among the workers installing field tile for a septic system. Paula Wethington, CBS News, 1 July 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 30 Jul. 2026.

Medical Definition

septic

adjective
1
2
: relating to, involving, caused by, or affected with sepsis
septic complications
septic arthritis
septic patients

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