biological shield
noun
A shield used for protection against radiation, especially one covering a nuclear reactor or cyclotron.
Origin
1940s; earliest use found in U.S. Patents.
- photo session
- photoset
- photosetter
- photosetting
- photoshock
- photo shoot
- Photoshop
- photospectroscopic
- photospectroscopy
- photosphere
- photospheric
- photo spread
- photostability
- photostable
- photostat
- photostatic
- photostationary
- photostereogram
- photostereograph
- photostimulable
- photostimulate
- photostimulation
- photostimulator
- photostimulatory
- photostory