Word | Noun | Adjective | Verb | Adverb |
---|---|---|---|---|
blood-brain barrier | Yes | No | No | No |
barrier | Yes | No | No | No |
blood-brain barrier (noun) | barrier (noun) |
---|---|
a mechanism that creates a barrier between brain tissues and circulating blood; serves to protect the central nervous system | a structure or object that impedes free movement |
any condition that makes it difficult to make progress or to achieve an objective | |
anything serving to maintain separation by obstructing vision or access |