marker
noun
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
4
: promissory note, iou
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
Checklists border each card, scrawled on the windows in purple marker. — Mike Morris, chicagotribune.com, "Recovery continues in Houston area 2 years after Harvey hit," 22 Aug. 2019 Behind the bar hang two rows of placards with names and descriptions of sakes written in marker. — Los Angeles Times, "Review: Los Angeles, this should be your sake spot," 22 Aug. 2019 Like trichotillomania and excoriation, physical damage and a person being unable to stop on their own are key markers of this condition. — Anna Borges, SELF, "Here’s When Hair-Pulling, Skin-Picking, or Nail-Biting Becomes a Disorder," 13 Aug. 2019 Bimbo spat into his palm and tried rubbing the foul couplet away, but it was written in permanent marker. — Colin Barrett, Harper's magazine, "The Alps," 22 July 2019 Another experimental test looks at neurofilament light, a protein that's a marker of nerve damage. — CBS News, "Scientists close in on blood test for Alzheimer's," 16 July 2019 July 10, 201901:24 Words in markers were left over from previous English lessons. — NBC News, "Reporters get a tour of a new facility for migrant minors in Texas," 11 July 2019 Photographers, painters, even filmmakers documented the viral opening in compliance with some of the tower's unique rules: It can't be drawn in permanent marker and all photos belong to Hudson Yards, not the photographer. — House Beautiful, "Everything You Need to Know About Hudson Yards, New York's $25 Billion Neighborhood," 19 Mar. 2019 In what appears to be a DIY creation, the tee's impactful words were hand-written in black marker. — Lauren Alexis Fisher, Harper's BAZAAR, "Miley Cyrus’ DIY T-Shirt Just Sent a Powerful Message On Gun Control," 11 Dec. 2018These 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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More Definitions for marker
marker
noun
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
See the full definition for marker in the English Language Learners Dictionary
marker
noun
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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