Dictionary

1lethal

adjective le·thal \ˈlē-thəl\

: causing or able to cause death

Full Definition of LETHAL

1
a :  of, relating to, or causing death <death by lethal injection>
b :  capable of causing death <lethal chemicals>
2
:  gravely damaging or destructive :  devastating <a lethal attack on his reputation>
3
:  very potent or effective <a lethal fastball>; also :  having a high alcohol content <a lethal rum punch>
le·thal·i·ty \lē-ˈtha-lə-tē\ noun
le·thal·ly \ˈlē-thə-lē\ adverb

Examples of LETHAL

  1. a potentially lethal dose of a drug
  2. He was sentenced to death by lethal injection.

Origin of LETHAL

Latin letalis, lethalis, from letum death
First Known Use: circa 1604

2lethal

noun

Definition of LETHAL

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

First Known Use of LETHAL

1917

Browse

Next Word in the Dictionary: lethal genePrevious Word in the Dictionary: let downAll Words Near: lethal
March 29, 2015
discomfit Hear it
To thwart or disconcert
Take a 3-minute break and test your skills!
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears