Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Medical
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

marker

play
noun mark·er \ˈmär-kər\

Simple 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

Source: Merriam-Webster's Learner's Dictionary

Full Definition of marker

  1. 1 :  one that marks

  2. 2 :  something used for marking

  3. 3 :  score 7; specifically :  run

  4. 4 :  promissory note, iou

  5. 5 :  something that serves to identify, predict, or characterize: as a :  biomarker b :  genetic marker

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>



15th Century

First Known Use of marker

15th century

Rhymes with marker


Medical Dictionary

marker

play
noun mark·er \ˈmär-kər\

Medical Definition of marker

  1. :  something that serves to identify, predict, or characterize <a surface marker on a cell that acts as an antigen>: asa:  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





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).

WORD OF THE DAY

the Celtic May Day festival

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

image567572573

Which of these is a synonym of unctuous?

prompt oily maudlin angry
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

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

TAKE THE QUIZ