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
As a marker of the level that United’s top forwards should strive to be at, Manchester City striker Sergio Aguero has scored 125 goals in 175 appearances since the start of 2015/16. — SI.com, "Astonishing Stat Shows Anthony Martial's Value (and How Bad Man Utd's Forward Line Has Been)," 12 Aug. 2019 In order to limit the possibility of this untenable change, and restore whiteness to its former status as a marker of national identity, a number of white Americans are sacrificing themselves. — Ellen Mcgirt, Fortune, "Missing Toni Morrison: raceAhead," 6 Aug. 2019 One brings back fond memories of how gold glistened beneath a Sergio Tacchini tracksuit, the other testifies to the gold chain’s place in history as a marker of status and symbol of protection. — Stellene Volandes, Town & Country, "Will These Gold Chains Make You Look Like Jackie O in the Summer?," 24 July 2019 Another experimental test looks at neurofilament light, or NEFL, a protein that serves as a marker of nerve damage. — Los Angeles Times, "Blood test for Alzheimer’s disease moves closer to becoming a reality," 15 July 2019 The easiest way to do that is to use human lives, rather than years, as the marker of time. — William Poundstone, Vox, "A math equation that predicts the end of humanity," 5 July 2019 Some might pass by this bell and just view it as a marker. — Tatiana Sanchez, SFChronicle.com, "As tensions flare over monuments, universities target California’s mission past," 4 July 2019 The limes serve as a marker, letting management know if diners have been tended to quickly. — Michael Mayo, sun-sentinel.com, "Review: Dr. Limon in Hallandale Beach is Peruvian cure for summertime blues," 26 June 2019 American Indians bent the tree as a sapling as a marker for the trail leading from Detroit to Pontiac. — Carlos Monarrez, Detroit Free Press, "Henry Ford, Jerome Bettis and the history of Detroit Golf Club," 25 June 2019These 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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