blood-brain barrier

noun \ ˈbləd-ˈbrān- \
|Updated on: 12 Jul 2018

Definition of blood-brain barrier

: a naturally occurring barrier created by the modification of brain capillaries (as by reduction in fenestration and formation of tight cell-to-cell contacts) that prevents many substances from leaving the blood and crossing the capillary walls into the brain tissues

Recent Examples of blood-brain barrier from the Web

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First Known Use of blood-brain barrier

1934

in the meaning defined above

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Medical Dictionary

blood-brain barrier

noun

medical Definition of blood-brain barrier

: a naturally occurring barrier created by the modification of brain capillaries (as by reduction in fenestration and formation of tight cell-to-cell contacts) that prevents many substances from leaving the blood and crossing the capillary walls into the brain tissues abbreviation BBB

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