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life-threatening

[lahyf-thret-ning, -thret-n-ing] /ˈlaɪfˌθrɛt nɪŋ, -ˌθrɛt n ɪŋ/
adjective
1.
endangering life:
a life-threatening illness.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for lifethreatening
  • The effects of propionic acidemia quickly become lifethreatening.
  • The hard slog included surviving two lifethreatening accidents.
  • In lifethreatening cases, exchange transfusion is performed.

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