It is also known as LYDIAN b7 (Lydian Flat 7). and according to wikipedia it's also known as the Acoustic Scale or the Overtone Scale.
All very interesting but not names I'd ever encountered in my blinkered guitarist world before googling for some back story to pad this out a bit. I might do that more often and see what else I can learn...
LYDIAN DOMINANT or what ever you choose to call it is the 4th mode of Melodic Minor and it is made up of the intervals, 1,2,3,#4,5,6,b7.
Have fun!
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