|Origin:||, past participle of incubare 'to lie on', from cubare 'to lie'|
in‧cu‧bate [intransitive and transitive]
if a bird incubates its eggs, or if the eggs incubate, they are kept warm until they hatch (=the birds inside are born)
if a disease incubates, or if you incubate it, it develops in your body until you show physical signs of it
—incubation noun [uncountable]
Hepatitis has a long incubation period.