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

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Synonyms for marker


label, tag, ticket

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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

The Industrial Revolution is generally agreed to have begun in the late 1700s or first half of the 1800s, and that’s also when most of these markers of human well-being started to change. Kelsey Piper, Vox, "Human history, in one chart," 8 Nov. 2018 One of the big markers of modern design was the Wassily chair, a seamless, tubular steel chair developed in 1925 that radically changed the approach to furniture design. Sienna Fantozzi, House Beautiful, "Here's Actually, Once And For All, What Modern Design Means," 4 Oct. 2018 The $99 test analyzes markers of people who best represent each distinct ethnic group in the world. Christine Willmsen, The Seattle Times, "Reporter’s DNA ancestry tests ‘caught me off guard’," 13 Sep. 2018 The vehicle crashed into two other vehicles Friday night around 6:30 p.m. at the 12-mile marker of the bridge-tunnel's southbound lanes. Bradford Betz, Fox News, "Body found in truck that plunged off Chesapeake Bay Bridge; search continues," 29 July 2018 Ingram also came up with the then-marker of the Arizona monsoon season's start: three consecutive days with a dew point above 55 degrees. Richard Ruelas, azcentral, "This is why dust storms are called 'haboobs' in Arizona," 10 July 2018 The design caught on and has become an unofficial flag for the city and a marker of hometown pride. Sarah Hauer, Milwaukee Journal Sentinel, "MilwaukeeHome T-shirt creator leaving the business but that doesn't mean the brand is done," 8 July 2018 Baptisms – a core marker of the faith – were fewer in 2017 by 26 percent compared with a decade ago, according to an internal survey published by LifeWay Christian Resources, the research arm of the denomination. Author: Michelle Boorstein, Sarah Pulliam Bailey, Anchorage Daily News, "How women led to the dramatic rise and fall of Southern Baptist leader Paige Patterson," 11 June 2018 Oncotype DX is only for women with early breast cancer that is driven by hormones, has not spread to any lymph nodes, and doesn’t overproduce the Her2 protein, a marker of aggressive tumors. Marie Mccullough,, "What the latest news on breast cancer, chemo and genomic testing could mean for you," 5 June 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

7 Jan 2019

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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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More from Merriam-Webster on marker

Rhyming Dictionary: Words that rhyme with marker

Thesaurus: All synonyms and antonyms for marker

Spanish Central: Translation of marker

Nglish: Translation of marker for Spanish Speakers Encyclopedia article about marker

Comments on marker

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tremendous in size, volume, or degree

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