aftertreatment

noun
af·​ter·​treat·​ment | \ ˈaf-tər-ˌtrēt-mənt \

Definition of aftertreatment

: a secondary treatment to which a material (as film or dyed goods) is subjected after the primary treatment is finished

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!

First Known Use of aftertreatment

1852, in the meaning defined above

History and Etymology for aftertreatment

after- + treatment

Learn More About aftertreatment

Time Traveler for aftertreatment

Time Traveler

The first known use of aftertreatment was in 1852

See more words from the same year

Dictionary Entries Near aftertreatment

aftertreat

aftertreatment

afterturn

See More Nearby Entries 

Statistics for aftertreatment

Cite this Entry

“Aftertreatment.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/aftertreatment. Accessed 25 Jun. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

WORD OF THE DAY

Test Your Vocabulary

Which Word Does Not Belong?

  • one green toy robot amidst many red toy robots
  • Which of these words does not mean "nonsense"?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Universal Daily Crossword

A daily challenge for crossword fanatics.

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!