Answer: incubated

AnswerCrossword Clue
INCUBATEDHatched, as a plot.
incubatedINCUBATE, to warm eggs for hatching
incubated(esp. in a laboratory) Keep (eggs, cells, bacteria, embryos, etc.) at a suitable temperature so that they develop
incubated(of a bird) Sit on (eggs) in order to keep them warm and bring them to hatching
incubatedHave an infectious disease developing inside one before symptoms appear
incubatedDevelop slowly without outward or perceptible signs