Definition: Pertaining to the hypothetical upper, purer air, or to
the higher regions beyond the earth or beyond the atmosphere;
celestial; as, ethereal space; ethereal regions.
Definition: Consisting of ether; hence, exceedingly light or airy;
tenuous; spiritlike; characterized by extreme delicacy, as form,
manner, thought, etc.
Definition: Pertaining to, derived from, or resembling, ether; as,
ethereal salts.