lethal:1
adjectivecirca 1604{ds||1|a|}
- of, relating to, or causing death
- capable of causing death
- gravely damaging or destructive : devastating
lethal:2
noun
lethal
\
1917{ds||1||}
- an abnormality of genetic origin causing the death of the organism possessing it
- lethal gene
lethal gene
noun
lethal gene
\
1939
- a gene that in some (such as homozygous) conditions may prevent development or cause the death of an organism or its germ cells —called also lethal factor, lethal mutant, lethal mutation
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