activated sludge process

noun

: a sewage treatment procedure in which the decomposition of the raw sewage is hastened by the addition to it of biologically active sewage sludge

Word History

First Known Use

1916, in the meaning defined above

Time Traveler
The first known use of activated sludge process was in 1916

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

Dictionary Entries Near activated sludge process

Cite this Entry

“Activated sludge process.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/activated%20sludge%20process. Accessed 23 Nov. 2024.

Love words? Need even more definitions?

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