Look up window in Wiktionary, the free dictionary.
A window is an opening in an otherwise solid, opaque surface, through which light can pass.
Window may also refer to:
Aeronautics
Launch window, in aerospace, a time period in which a particular rocket must be launched
Chaff (radar countermeasure) (originally called Window), during World War II, the dropping of aluminium foil by aircraft to deceive radar installations
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