SEPTIC
septic, infected
(adjective) containing or resulting from disease-causing organisms; “a septic sore throat”; “a septic environment”; “septic sewage”
septic
(adjective) of or relating to or caused by putrefaction; “the septic action occurs at the bottom of the septic tank”
Source: WordNet® 3.1
Etymology 1
Adjective
septic (comparative more septic, superlative most septic)
Of or pertaining to sepsis.
Causing sepsis or putrefaction.
Of or pertaining to sewage or the disposal of sewage.
Noun
septic (plural septics)
A substance that causes sepsis or putrefaction.
A septic tank; a system for the disposal of sewage into a septic tank, a septic system.
Coordinate terms
(septic tank, septic system)
• leach drain
• leach drainfield
• leach field
• drainfield
• water closet
Etymology 2
Noun
septic (plural septics)
(mathematics) A mathematical object (function, curve, surface, etc.) of degree seven.
Adjective
septic (not comparable)
(mathematics) Of the seventh degree or order.
Etymology 3
Noun
septic (plural septics)
(UK, Australia, New Zealand, rhyming slang, derogatory) An American, a Yank.
Etymology
Noun
Septic (plural Septics)
(UK, Australia, New Zealand, Cockney rhyming slang) Alternative form of septic; an American.
Source: Wiktionary
Sep"tic, a. Etym: [Septi- + -ic.] (Math.)
Definition: Of the seventh degree or order.
– n. (Alg.)
Definition: A quantic of the seventh degree.
Sep"tic, Sep"tic*al, a. Etym: [L. septicus, Gr. septique.]
Definition: Having power to promote putrefaction.
Sep"tic, n.
Definition: A substance that promotes putrefaction.
Source: Webster’s Unabridged Dictionary 1913 Edition