Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A brief, specific period of time during which a spacecraft or projectile must be launched so that a desired mission or effect can be achieved.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The period between the earliest and latest times during which a rocket or spacecraft may be launched in order to achieve its mission

Etymologies

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Examples

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