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Definitions

marker

[mahr-ker] / ˈmɑr kər /
NOUN
a writing instrument
Synonyms




Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Ideaya’s treatment targets an aggressive form of uveal melanoma that generally has a poor prognosis because it occurs in patients who lack the genetic marker to receive typical immunotherapy.

From Barron's • Apr. 13, 2026

The cease-fire reached between the U.S. and Iran on Tuesday night offer a marker to show what has, and what has not, shifted in global financial markets.

From MarketWatch • Apr. 8, 2026

The cease-fire reached between the U.S. and Iran on Tuesday night presents a marker showing how things have shifted in global financial markets.

From The Wall Street Journal • Apr. 8, 2026

In the last 12 months, McIlroy has discovered that was more of a memorable mile marker than a monumental, life-changing milestone.

From Los Angeles Times • Apr. 7, 2026

When no one was looking, he took a blue marker and made himself the beginning of a tattoo on one arm.

From "All About Sam" by Lois Lowry