LAUNCH WINDOW

{n.}, {Space English}, {informal} 1. A period of time when the line-up of planets, Sun, and Moon are such as to make favorable conditions for a specific space launch. * /The mission was canceled until the next launch window which will be exactly six weeks from today./ 2. A favorable time for starting some kind of ambitious adventure. * /My next launch window for a European trip isn't until school is over in June./