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Definitions

beta

[bay-tuh, bee-] / ˈbeɪ tə, ˈbi- /


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.

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With fewer options free of AI risks, investors have had to turn to other corners of the stock market to provide some buffer against an AI-related unwinding, and negative beta has increasingly become an option.

From MarketWatch ● Oct. 7, 2026

A stock with negative beta routinely trades opposite the broader market.

From MarketWatch ● Oct. 6, 2026

In mice, researchers found that ImP reaching the brain increased the accumulation of abnormal beta amyloid and tau proteins, two major hallmarks associated with Alzheimer's disease.

From Science Daily ● Oct. 3, 2026

With every merger there’s a dominant and a submissive, an alpha and a beta, a winner and a loser.

From The Wall Street Journal ● Sep. 15, 2026

Radium emitted alpha particles at a meager 7.6 million electron volts and beta rays—that is, electrons—at only 3 million volts.

From "Big Science" by Michael Hiltzik

Defensive stocks in consumer staples, utilities, and healthcare, with betas larger than -0.1%, tend to gain when the market declines.

From Barron's ● Jun. 24, 2026

Consider the performance of a hypothetical portfolio that buys the 10% of stocks with the highest betas and sells short the decile of stocks with the lowest betas.

From MarketWatch ● Oct. 23, 2025

“We’re betas pretending to be alphas,” Denton said.

From New York Times ● Nov. 3, 2022

As was the case with Samsung’s previous One UI betas, you can access the One UI 5 update by registering through the Samsung Members app.

From The Verge ● Aug. 7, 2022

Greek letters move across the undersides of his eyelids: isosceles triangles, betas, sine curves.

From "All the Light We Cannot See" by Anthony Doerr




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