| n. | 1. | |
| 1. | A sitting on eggs for the purpose of hatching young; a brooding on, or keeping warm, (eggs) to develop the life within, by any process. |
| 2. | (Med.) The development of a disease from its causes, or its period of incubation. (See below. |
| 3. | A sleeping in a consecrated place for the purpose of dreaming oracular dreams. |
| 4. | The maintenance (of a living organism, such as microorganisms or a premature baby) in appropriate conditions, such as of temperature, humidity, or atmospheric composition, for growth. |
| 5. | The gradual development in some interior environment, until fully formed; as, the incubation time for developing a new drug may be longer than ten years from its first discovery. |