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Definitions

spontaneous

[spon-tey-nee-uhs] / spɒnˈteɪ ni əs /


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.

“She had a spontaneous unexplained brain bleed that led to brain death.”

From Salon • May 7, 2026

Is time for a more old school, and spontaneous, connection?

From The Wall Street Journal • May 2, 2026

Although they appear spontaneous, there is a level of coordination and predictability to them.

From BBC • Apr. 28, 2026

“It’s spontaneous combustion,” said James Boles, a professor emeritus with UC Santa Barbara’s Earth Science Department.

From Los Angeles Times • Apr. 24, 2026

And by freezing cells at various points, they believed they could see the actual moment when a normal cell growing in culture became malignant, a phenomenon they called spontaneous transformation.

From "The Immortal Life of Henrietta Lacks" by Rebecca Skloot




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