ethereal
adj.
of or containing or dissolved in ether
ethereal solution
adj.
characterized by lightness and insubstantiality; as impalpable or intangible as air
figures light and aeriform come unlooked for and melt away|aerial fancies|an airy apparition|physical rather than ethereal forms
Synonym: aerial, aeriform, aery, airy
adj.
of heaven or the spirit
celestial peace|ethereal melodies|the supernal happiness of a quiet death
adj.
characterized by unusual lightness and delicacy
this smallest and most ethereal of birds|gossamer shading through his playing
Synonym: gossamer