mark·er | \ ˈmär-kər \

Definition of marker 

1 : one that marks

2 : something used for marking: such as

a : a type of felt tip pen that makes wide lines drew a tree with green and brown markers used a permanent marker to label the boxes

b : any of various sewing devices for making or indicating guidelines a pin marker for hemlines

3 : score sense 7 specifically : run

5 : something that serves to identify, predict, or characterize: such as

a : biomarker

b : genetic marker

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Examples of marker in a Sentence

A person's accent can be a marker of social class. the markers on the rock and mineral specimens were old and faded

Recent Examples on the Web

In June 2017, a complaint was filed with the Maine Human Rights Commission on behalf of a South Portland resident, who requested a driver's license with a non-binary gender marker, but was denied as a result of computer limitations. Christina Capatides, CBS News, "Maine to offer third, non-binary gender option on driver’s licenses, IDs," 11 June 2018 The final script arrives and Feresten flips through pages, sticks white tape over deleted lines on the cards and writes new lines with a fat marker. Elahe Izadi,, "Inside the writers' room with Seth Meyers: How to make late-night TV in the Trump era," 29 May 2018 Rieger does the piece no favors by signaling deaths by having the killer literally x out his victim with a marker or by naming one of his characters Persephone—queen of the underworld, get it? Dmitry Samarov, Chicago Reader, "Crossing Aviva might be enjoyable if it left any room to breathe," 11 May 2018 In the rear of the store, the artist Mokshini moved furiously with markers as guests lined up by the bushel to have their likenesses drawn. John Ortved, Vogue, "It Happened on Fifth Avenue: Kendall Jenner Opens Longchamp’s New Flagship," 4 May 2018 The antibodies were tagged with a marker that glows when a fluorescent light shines on it. Deborah Netburn,, "In human cells, scientists find DNA that looks like a twisted knot instead of a double helix," 23 Apr. 2018 They’re made with edible marker on sheets of rice paper, the kind that bakeries use to print pictures on cakes. Meredith Mendelsohn, New York Times, "What’s for Lunch? Soup, With a Side of Art," 10 Apr. 2018 Now that spot, near Parkton, will be commemorated with a roadside marker. Alison Knezevich,, "Woman who Nazis called 'most dangerous of all Allied spies' memorialized in Baltimore County," 7 Apr. 2018 Schroeder changed the momentum and brought Cleveland's lead back to two with a marker at 1:35 of the third period, assisted by Nathan Gerbe and Garret Cockerill. Plain Dealer Sports,, "Cleveland Monsters beat Rockford IceHogs, 5-2, third win in four games," 18 Feb. 2018

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

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First Known Use of marker

15th century, in the meaning defined at sense 1

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Statistics for marker

Last Updated

16 Sep 2018

Look-up Popularity

Time Traveler for marker

The first known use of marker was in the 15th century

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More Definitions for marker



English Language Learners Definition of marker

: something (such as a sign or an object) that shows the location of something

: something that shows the presence or existence of something

: a type of pen that makes wide lines


mark·er | \ ˈmär-kər \

Medical Definition of marker 

: something that serves to identify, predict, or characterize a surface marker on a cell that acts as an antigen : as

a : biomarker The recent discovery of a serological marker for the hepatitis C virus has greatly improved diagnostic accuracy for this form of hepatitis. —Gary P. Wormser, letter in The Journal of the American Medical Association, 12 June 1991

b : genetic marker The idea in genetic linkage analysis is to see if any particular marker, which serves as a signpost for a specific region of a chromosome, is consistently inherited along with the disease … —Leslie Roberts, Science, 29 Jan. 1993

called also marker gene

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Comments on marker

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


occurring twice a year or every two years

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