septic tank

noun

Definition of septic tank

:a tank in which the solid matter of continuously flowing sewage is disintegrated by bacteria

First Known Use of septic tank

circa 1902


SEPTIC TANK Defined for English Language Learners

septic tank

noun

Definition of septic tank for English Language Learners

  • : a tank under the ground that holds human waste from toilets


Learn More about septic tank


Seen and Heard

What made you want to look up septic tank? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

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

WORD OF THE DAY

to suppress quietly or indirectly

Get Word of the Day daily email!

Test Your Vocabulary

The Exceptions Quiz III

  • one-green-toy-robot-amidst-many-red-toy-robots
  • Which of these words does not mean "nonsense"?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

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