incubate
Concise Oxford English Dictionary © 2008 Oxford University Press:
incubate /ˈɪŋkjʊbeɪt/
▶verb
- 1 (of a bird) sit on (eggs) in order to keep them warm and bring them to hatching.
- 2 develop (something, especially an infectious disease) slowly without outward or perceptible signs.
– derivatives
incubation noun,
incubative adjective,
incubatory /ˈɪŋkjʊbeɪt(ə)ri/ adjective.
incubation noun,
incubative adjective,
incubatory /ˈɪŋkjʊbeɪt(ə)ri/ adjective.
– origin C17: from L. incubat-, incubare ‘lie on’.
'incubate' also found in these Oxford entries:

