Septic Definition

sĕptĭk
adjective
Of, relating to, having the nature of, or affected by sepsis.
American Heritage
Causing, or resulting from, sepsis or putrefaction.
Webster's New World
The definition of septic is something that results from or causes decay, or absorption of something that produces disease.
An example of septic is a cesspit toilet.
An example of septic is a type of tank that contains the sewage from a household; a septic tank.
YourDictionary

Of or pertaining to sewage or the disposal of sewage.

Septic tank; septic system.
Wiktionary
(mathematics) Of the seventh degree or order.
Wiktionary
Synonyms:
Antonyms:
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noun

A substance that causes sepsis or putrefaction.

Wiktionary
A septic tank; a system for the disposal of sewage into a septic tank, a septic system.
Wiktionary

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

Wiktionary

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

Wiktionary

(UK, Australia, New Zealand, Cockney rhyming slang) Alternative form of septic; an American.

Wiktionary
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Other Word Forms of Septic

Noun

Singular:
septic
Plural:
septics

Origin of Septic

  • Latin sēpticus putrefying from Greek sēptikos from sēptos rotten from sēpein to make rotten

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Ancient Greek σηπτικός (sÄ“ptikos, “characterized by putridity"), from σηπτός (sÄ“ptos), from σήπειν (sÄ“pein).

    From Wiktionary

  • Short form of Cockney rhyming slang septic tank (“Yank").

    From Wiktionary

  • From Latin septem (“seven").

    From Wiktionary

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