sep·a·ra·tor | \ˈse-pə-ˌrā-tər, ˈse-ˌprā-tər\

Definition of separator 

: one that separates especially : a device for separating liquids of different specific gravities (such as cream from milk) or liquids from solids

Keep scrolling for more

Examples of separator in a Sentence

the toddler insisted on a dinner plate with separators so that different foods would never touch one another

Recent Examples on the Web

Mascara tends to make lashes a little clumpy, but a lash separator really gives lashes that oomph. Ashley Weatherford, The Cut, "Kim Kardashian West’s Makeup Artist on Drugstore Beauty and the Best Acne Treatment," 20 Apr. 2018 Both the NET Power system and oxyfuel combustion require an on-site air separator system to create the pure oxygen that's used in combustion. Megan Geuss, Ars Technica, "In Texas, a new power plant could redefine carbon capture," 31 May 2018 All of Beartooth Vanworks’ conversions also feature a top-notch electrical system—think solar panels, a battery separator, AGM battery, overhead lights, and 12v, 110v, and USB outlets. Megan Barber, Curbed, "Sleek camper van is an adventure cabin on wheels," 4 June 2018 Most handheld and portable electronics use lithium ion batteries, which are made up of an anode, a cathode, a separator, an electrolyte, a positive current, and a negative current. Lauren Goode, WIRED, "Batteries Still Suck, But Researchers Are Working on It," 22 May 2018 Before the batteries were assembled, the researchers immersed a glass fiber separator in a lithium nitrate solution. Lauren Goode, WIRED, "Batteries Still Suck, But Researchers Are Working on It," 22 May 2018 To the left of the address bar is the usual list of extension icons, but after that is a new vertical separator and a new, round profile icon. Ron Amadeo, Ars Technica, "Google Chrome’s major redesign shows a lighter, rounder UI," 23 Apr. 2018 Leaving the fat behind (or spooning it off if not using a separator), pour the juices from the bottom into a large (4-cup) measuring cup. Woman's Day Kitchen, Woman's Day, "Roasted Turkey Gravy," 2 Oct. 2013 Strain pan drippings into a measuring cup or fat separator ($15, The Good Housekeeping Test Kitchen, Good Housekeeping, "White Wine and Herb Gravy," 30 Oct. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'separator.' 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 separator

1607, in the meaning defined above

Keep scrolling for more

Learn More about separator

Statistics for separator

Look-up Popularity

Time Traveler for separator

The first known use of separator was in 1607

See more words from the same year

Keep scrolling for more

More Definitions for separator



English Language Learners Definition of separator

: someone or something that separates two or more things from each other


sep·a·ra·tor | \ˈsep-(ə-)ˌrāt-ər \

Medical Definition of separator 

: one that separates: as

a : a device for separating liquids of different specific gravities (as cream from milk) or liquids from solids

b : a dental appliance for separating adjoining teeth to give access to their surfaces

Keep scrolling for more

Comments on separator

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


one that holds something together

Get Word of the Day daily email!

Test Your Vocabulary

Words from Greek and Roman Mythology Quiz

  • the-triumph-of-venus-by-alessandro-magnasco
  • Boreal comes from the name of the ancient Greek god of which wind?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

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!