blood-brain barrier

1. 1.

   a mechanism that creates a barrier between brain tissues and circulating blood; serves to protect the central nervous system

   “the brain was protected from the large molecules of the virus by the blood-brain barrier”

   Broaderbarrier

Questions about blood-brain barrier

What does blood-brain barrier mean?

blood-brain barrier means "a mechanism that creates a barrier between brain tissues and circulating blood; serves to protect the central nervous system".

Is blood-brain barrier a common word?

blood-brain barrier is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.