ether

Noun
  1. The fifth and highest element after air and earth and fire and water;
    Was believed to be the substance composing all heavenly bodies (synset 114871273)
    domain usage: archaicism, archaism - the use of an archaic expression
    is a type of: element - one of four substances thought in ancient and medieval cosmology to constitute the physical universe
    same as: quintessence
  2. Any of a class of organic compounds that have two hydrocarbon groups linked by an oxygen atom (synset 114733263)
    is a type of: organic compound - any compound of carbon and another element or a radical
  3. A medium that was once supposed to fill all space and to support the propagation of electromagnetic waves (synset 106265492)
    is a type of: medium - an intervening substance through which signals can travel as a means for communication
    same as: aether
  4. A colorless volatile highly flammable liquid formerly used as an inhalation anesthetic (synset 103304876)
    is a type of: inhalation anaesthetic, inhalation anesthetic, inhalation general anaesthetic, inhalation general anesthetic - a gas that produces general anesthesia when inhaled
    subtypes: enflurane, ethrane - a nonflammable liquid (trade name Ethrane) used as an inhalation general anesthetic
    same as: diethyl ether, divinyl ether, ethoxyethane, ethyl ether, vinyl ether

Other Searches