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Definition of marker

marker

/ˈmɑːr.kɚ/
mar · ker
Plural:markers
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marker Lexical Profile

marker Game Scores & Validity

• noun

1

A felt-tip pen with a broad tip used for writing, drawing, or coloring.

Example

"The teacher used a red marker to write the instructions on the whiteboard."

2

An object used to indicate a specific position, place, or route.

Example

"We left a pile of stones as a marker so we could find our way back to the trail."

3

A measurable biological, genetic, or physical trait used to identify a specific disease, state, or evolutionary lineage.

Example

"The blood test screens for specific chemical markers associated with heart disease."

Synonyms
View all synonyms for marker

• Rhymes for marker

• Nearby Words

markdown
marked
markedly
marker
market
marketability
marketable

Word Origin & Etymology

Derived from the verb 'mark' combined with the agent noun suffix '-er', originating from Old English 'mearcian' (to trace out boundaries).

Usage Trend

Historical frequency of usage in published text.

180019102020
Data source: Google Books Ngram Viewer

Cite this Entry

Wordmom. (2026). Definition of Marker. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/marker
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