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Definitions

barrier

[bar-ee-er] / ˈbær i ər /




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.

With this self-formed beam, the team produced 3D images of the human blood-brain barrier at speeds about 25 times faster than the current gold-standard approach, while preserving similar image quality.

From Science Daily • Apr. 28, 2026

Scientists often need to observe how drugs move through the blood vessels in this barrier and whether they successfully reach brain tissue.

From Science Daily • Apr. 28, 2026

The following month, Parry-Thomas became the first person to break the 170mph barrier.

From BBC • Apr. 27, 2026

“This creates a data barrier that most companies cannot easily replicate.”

From The Wall Street Journal • Apr. 26, 2026

She not only got to fly the jet—she broke the sound barrier in it.

From "Women in Space" by Karen Bush Gibson




Vocabulary lists containing barrier