semilethal
English
Etymology
From
semi-
+
lethal
.
Adjective
semilethal
(
not comparable
)
(
biology
,
genetics
,
of a trait
)
lethal
to at least half of all affected organisms
Derived terms
semilethal dose
Noun
semilethal
(
plural
semilethals
)
A semilethal trait.