To keep (eggs, embryos, or bacteria) at a suitable temperature so that they develop. The scientist incubated the bacterial cultures at 37 degrees Celsius.
To develop an idea or plan slowly and carefully before taking action. She incubated the business concept for months before presenting it to investors.
Of a disease or pathogen, to develop inside a person or animal before symptoms appear. The virus can incubate in the host for up to two weeks before any signs become noticeable.