marker

noun mark·er \ ˈmär-kər \

Definition of marker

1 :one that marks
2 :something used for marking
3 :score 7; specifically :run
5 :something that serves to identify, predict, or characterize: such as

Examples of marker in a Sentence

  1. A person's accent can be a marker of social class.

  2. the markers on the rock and mineral specimens were old and faded

Recent Examples of marker from the Web

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

marker Synonyms


MARKER Defined for English Language Learners

marker

noun

Definition of marker for English Language Learners

  • : 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


Medical 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 Association12 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 RobertsScience29 Jan. 1993
called also marker gene


Seen and Heard

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

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

pleasing or sweet sound

Get Word of the Day daily email!

Test Your Vocabulary

Forms of Government Quiz

  • knupfer-painting-solon-before-croesus
  • A gerontocracy is rule by:
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!