to sit upon (eggs) for the purpose of hatching.

to hatch (eggs), as by sitting upon them or by artificial heat.

to maintain at a favorable temperature and in other conditions promoting development, as cultures of bacteria or prematurely born infants.

to develop or produce as if by hatching; give form to

His brain was incubating schemes for raising money.

to sit upon eggs.

to undergo incubation.

to develop; grow; take form

A plan was slowly incubating in her mind.

verb

brood , breed , nurture , produce