Poisonousness is a derived term of poisonous.
As a noun poisonousness
is the state or quality of being poisonous.
As a adjective poisonous is
containing sufficient poison to be dangerous.
poisonousness
English
Noun
(-)
The state or quality of being poisonous.
poisonous
English
Adjective
(
en adjective)
Containing sufficient poison to be dangerous
(of an animal) Inedible due to containing poison; poisonous to eat
Synonyms
* toxic, venomous, attery
Derived terms
* poisonousness