ethereal (adj): extremely delicate and light in a way that seems too perfect for this world.
"her ethereal beauty"
"melodic phrases of ethereal beauty" "ethereal, otherworldly visions"
synonyms: delicate, exquisite, dainty, elegant, graceful, beautiful, lovely, celestial, heavenly, spiritual, unearthly, otherworldly, sublime, divine, holy antonyms: tangible, substantial, earthly
ethereal, chemistry definition: (of a solution) having diethyl ether as a solvent.
Origin: early 16th century: via Latin from Greek aitherios (from aithēr ‘ether’) + -al.
Above: A magnificent view of the ethereal northern lights, AKA aurora borealis.