protective barrier
Defensive boundary structure
A protective barrier is anything that shields or guards against harm, intrusion, or unwanted contact.
Physical examples include fences, walls, and safety guards on machinery.
The phrase extends to abstract shields: Sunscreen acts as a protective barrier against UV rays.
In medicine, skin serves as the body's protective barrier against infection.
- wallVertical enclosing structure
- sea wallCoastal flood defense structure
- fenceBoundary structure between properties
- gated communityRestricted-access residential area
- riot gearProtective equipment for civil disturbance
cuticle · protective layer · cell membrane · skin · defense mechanism · immune system · cocoon · bubble wrap · shield · mucus · exoskeleton · gate · bark · armor · carapace · ozone layer · antibodies · dam
- radiation safetydosimeter, radiation shielding, lead apron, dosimeters, radiation exposure
- Dental X-raysbitewing, radiograph, panoramic, pano, digital x-ray
protective barriergateway
Point of access
opening · doorway · entrance · portal · access point
protective barrierexposure
State of being unprotected
vulnerability · defenselessness · weak point · hazard · danger zone