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Definitions

brain

[breyn] / breɪn /




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.

The drug industry has been trying for years to develop tricks to shuttle the drugs that treat Alzheimer’s disease through the body’s protective brain-blood barrier, which blocks 99% of a dose from reaching the brain.

From Barron's • Jun. 4, 2026

According to the NHS, dyslexia is a common learning difficulty where your brain works differently to most people.

From BBC • Jun. 3, 2026

And there’s still lots we don’t know about how these drugs work on the brain, even though thousands of patients undergo a general anesthetic every day.

From The Wall Street Journal • Jun. 3, 2026

Don’t be afraid to pick the brain of someone you trust.

From MarketWatch • Jun. 3, 2026

Through this force, every part of the brain is connected to every other part.

From "Phineas Gage" by John Fleischman




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