the.com/ethereal
So delicate it seems to apologize for having mass at all.
means Describes something extremely light, airy, or heavenly — so refined it feels barely physical.
from From the Greek aither, the pure upper air the gods supposedly breathed, far above our grubby lower atmosphere.
Old scienceAether was once believed to fill all space.
Chemistry cousinThe anesthetic ether shares the same airy root.
OppositeEarthly, dense, corporeal — anything you can stub a toe on.