adjectives
characterized by lightness and insubstantiality; as impalpable or intangible as air
"figures light and aeriform come unlooked for and melt away"- Thomas Carlyle; "aerial fancies"; "an airy apparition"; "physical rather than ethereal forms"
of or containing or dissolved in ether
"ethereal solution"
domain category
the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions
of heaven or the spirit
"celestial peace"; "ethereal melodies"; "the supernal happiness of a quiet death"
characterized by unusual lightness and delicacy
"this smallest and most ethereal of birds"; "gossamer shading through his playing"