1

lethal

play
adjective le·thal \ˈlē-thəl\

Definition of lethal

  1. 1 a :  of, relating to, or causing death <death by lethal injection> b :  capable of causing death <lethal chemicals>

  2. 2 :  gravely damaging or destructive :  devastating <a lethal attack on his reputation>

  3. 3 :  very potent or effective <a lethal fastball>; also :  having a high alcohol content <a lethal rum punch>

lethality

play \lē-ˈtha-lə-tē\ noun

lethally

play \ˈlē-thə-lē\ adverb

Examples of lethal in a sentence

  1. a potentially lethal dose of a drug

  2. He was sentenced to death by lethal injection.

Origin and Etymology of lethal

Latin letalis, lethalis, from letum death


First Known Use: circa 1604

Synonym Discussion of lethal

deadly, mortal, fatal, lethal mean causing or capable of causing death. deadly applies to an established or very likely cause of death <a deadly disease>. mortal implies that death has occurred or is inevitable <a mortal wound>. fatal stresses the inevitability of what has in fact resulted in death or destruction <fatal consequences>. lethal applies to something that is bound to cause death or exists for the destruction of life <lethal gas>.

2

lethal

noun le·thal

Definition of lethal

  1. 1 :  an abnormality of genetic origin causing the death of the organism possessing it

  2. 2 :  lethal gene

1917

First Known Use of lethal

1917


LETHAL Defined for English Language Learners

1

lethal

play
adjective le·thal \ˈlē-thəl\

Definition of lethal for English Language Learners

  • : causing or able to cause death


Medical Dictionary

1

lethal

play
adjective le·thal \ˈlē-thəl\

Medical Definition of lethal

  1. :  of, relating to, or causing death <a lethal injury>; also :  capable of causing death <lethal chemicals> <a lethal dose>

lethality

\lē-ˈthal-ət-ē\play noun plural

lethalities

lethally

adverb

2

lethal

noun le·thal

Medical Definition of lethal

  1. 1:  an abnormality of genetic origin causing the death of the organism possessing it usually before maturity

  2. 2:  lethal gene



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