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life-threatening

adjective life-threat·en·ing \ ˈlīf-ˌthret-niŋ , -ˌthre-tᵊn-iŋ \

Definition of life-threatening

: capable of causing death : potentially fatal
  • a life-threatening disease/condition
  • The injuries are serious but not life-threatening.

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First Known Use of life-threatening

1759

in the meaning defined above

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Medical Dictionary

life-threatening

adjective life-threat·en·ing \ ˈlīf-ˌthret-ən-iŋ \

medical Definition of life-threatening

: capable of causing death : potentially fatal
  • life-threatening injuries
  • a life-threatening allergic reaction
  • life-threatening arrhythmia

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