اسم ( noun )
• (1) تعریف: a very volatile, flammable liquid compound of hydrogen, carbon, and oxygen, used as a solvent and formerly as an anesthetic.
• (2) تعریف: any of a group of compounds in which two hydrocarbon groups are attached to an oxygen atom.
• (3) تعریف: outer space.
• مشابه: space
• (4) تعریف: formerly, the substance believed to constitute outer space, and to be the medium of electromagnetic waves, including light.