IPA: /nɒnˈbriːðɪŋ/
KK: /nɑnˈbrithɪŋ/
Not having the ability to breathe or not currently breathing.
The nonbreathing mannequin was used for the CPR training.
Nonbreathing → It is formed from "non-" (meaning not) and "breathing" (from Old English "brēathian", meaning to breathe). The word "nonbreathing" describes something that does not breathe or lacks the ability to breathe.
Think of 'not' ('non-') being combined with 'breathing' — this helps you remember that 'nonbreathing' refers to something that does not breathe.