frac·​tion·​ate | \ˈfrak-shə-ˌnāt \
fractionated; fractionating

Definition of fractionate 

transitive verb

1 : to separate (a mixture) into different portions especially by a fractional process

2 : to divide or break up

Keep scrolling for more

Other Words from fractionate

fractionation \ˌfrak-​shə-​ˈnā-​shən \ noun
fractionator \ˈfrak-​shə-​ˌnā-​tər \ noun

Examples of fractionate in a Sentence

Recent Examples on the Web

Buzz: With the help of Botox and fractionated lasers, doctors can erase lines and wrinkles on the chest and even sharpen the appearance of cleavage. Jessica Prince Erlich, Harper's BAZAAR, "15 Over-the-Top Treatments to Try Before Your Wedding Day," 9 June 2016 There's also fractionated laser resurfacing and microneedling. Devon Abelman, Allure, "Water Bottles as a Skin-Firming Device: a Dermatologist Weights in," 18 Aug. 2017 The magma body caused by the Sudbury impact was large enough to stay hot for sufficient time to allow minerals to crystallize and separate (fractionate) in the chamber. Erik Klemetti, WIRED, "When a Giant Asteroid Impact Created Its Own Magma," 26 Sep. 2014

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'fractionate.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of fractionate

1867, in the meaning defined at sense 1

History and Etymology for fractionate

fraction + -ate entry 4

Keep scrolling for more

Learn More about fractionate

Share fractionate

Statistics for fractionate

Look-up Popularity

Time Traveler for fractionate

The first known use of fractionate was in 1867

See more words from the same year

Keep scrolling for more

More Definitions for fractionate


transitive verb
frac·​tion·​ate | \-shə-ˌnāt \
fractionated; fractionating

Medical Definition of fractionate 

: to separate (as a mixture) into different portions (as by distillation or precipitation)

More from Merriam-Webster on fractionate

Rhyming Dictionary: Words that rhyme with fractionate

Comments on fractionate

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


to move with a clumsy heavy tread

Get Word of the Day daily email!

Test Your Vocabulary

Late Autumn 2018 Words of the Day Quiz

  • frosted-autumn-leaves
  • Which is a synonym of yahoo?
Spell It

Can you spell these 10 commonly misspelled words?

Word Winder's CrossWinder

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


Love words? Need even more definitions?

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