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[lahyf-thret-ning, -thret-n-ing]
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  1. endangering life: a life-threatening illness.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for life-threatening

Contemporary Examples

Historical Examples

  • These are the two most life-threatening conditions you can do something about.

    In Time Of Emergency

    Department of Defense

  • Heart trouble was not easily diagnosed and cancer was not recognized as a life-threatening disease.

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