The Dictionary of Internal Security

Dictionary

English  
oxygen apparatus, oxygen breathing apparatus - noun + noun
 
 
Definitions  
Def: a device that is placed over the mouth and nose, supplies oxygen from an attached cylinder and enables the user to breathe
Example: In the UK, the oxygen breathing apparatus has been used by fire fighters since the 1910s.
 
Usage note  
Word family  
 
Collocations  
 
See also  
 
dic_connotations