mark·​er | \ ˈmär-kər How to pronounce marker (audio) \

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

Synonyms for 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 This autonomy will be a significant marker in the era of digital acceleration. Martin Birch, Forbes, 9 Aug. 2022 Outline the jar's base on the top of the pumpkin using a marker. Penelope O'sullivan, Better Homes & Gardens, 9 Aug. 2022 Grand jury testimony represents a new marker in an investigation that is offering increasing signs of the potential legal peril ahead for Donald Trump and some of his associates. Kevin Johnson, USA TODAY, 8 Aug. 2022 The prime status marker in a movement that has abjured financial reward is a reputation for punctilious (and often contrarian) intelligence. Gideon Lewis-kraus, The New Yorker, 8 Aug. 2022 The tail light side marker assemblies may be damaged and not illuminate. Detroit Free Press, 6 Aug. 2022 Designed with a marker-like tip, this eyebrow pencil is perfect for filling in your brows. Madison Yauger, Peoplemag, 5 Aug. 2022 When a direction is pressed the corresponding marker is revealed. Jennifer Ouellette, Ars Technica, 3 Aug. 2022 Drivers are being diverted this morning to the mile marker 98 exit, FHP said. Joe Mario Pedersen, Orlando Sentinel, 1 Aug. 2022 See More

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.

First Known Use of marker

15th century, in the meaning defined at sense 1

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Time Traveler for marker

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

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Dictionary Entries Near marker



marker bed

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Last Updated

13 Aug 2022

Cite this Entry

“Marker.” Dictionary, Merriam-Webster, Accessed 18 Aug. 2022.

Style: MLA
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mark·​er | \ ˈmär-kər How to pronounce marker (audio) \

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
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

called also marker gene

More from Merriam-Webster on marker

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


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