[ mahr-ker ]
/ ˈmɑr kər /


Origin of marker

First recorded in 1480–90; mark1 + -er1 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for marker

British Dictionary definitions for marker

/ (ˈmɑːkə) /


  1. something used for distinguishing or marking
  2. (as modifier)a marker buoy
a person or thing that marks
a person or object that keeps or shows scores in a game
a trait, condition, gene, or substance that indicates the presence of, or a probable increased predisposition to, a medical or psychological disorderSee biological marker, genetic marker, medical marker
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for marker

[ märkər ]


One that marks or serves as a mark.
A physiological substance, such as human chorionic gonadotropin or alpha-fetoprotein, that may indicate disease when present in abnormal amounts in the serum, as that caused by a malignancy.biomarker
A genetic marker.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.