Definition

1. Noun:
   • A chemical compound: "diethyl ether" is a specific organic compound with the chemical formula (C₂H₅)₂O. It is a colorless, volatile, and highly flammable liquid.
   • A historical anesthetic: It was formerly used widely as an inhalation anesthetic in medical surgery due to its ability to induce unconsciousness.

Usage Examples

• Noun:
  • In the laboratory, diethyl ether is commonly used as a solvent for various organic reactions.
  • Before modern anesthetics, surgeons often used diethyl ether to put patients to sleep during operations.

Advanced Usage

• "Ether" as a common name: In informal or historical chemical contexts, "diethyl ether" is often simply called "ether".
  • The old chemistry textbook referred to the solvent as 'ether'.
• Technical specification: Often specified in scientific writing to distinguish it from other ether compounds.
  • The procedure requires anhydrous diethyl ether.

Variants and Related Words

• Ether (n): A common, shorter name for diethyl ether, especially in historical or general contexts.
  • The discovery of ether's anesthetic properties was a major medical advance.
• Ethoxyethane (n): The systematic IUPAC name for diethyl ether.
• Solvent ether (n): A term sometimes used to denote diethyl ether when emphasizing its use as a solvent.

Synonyms

• Ethyl ether: Another name for the same compound.
• Sulfuric ether: An older name stemming from its common production method.

Related Phrases

• Ether anesthesia: The use of diethyl ether to produce general anesthesia.
  • Ether anesthesia was revolutionary but had significant side effects like nausea.

Related Idioms

• To be in the ether: This idiom, meaning an idea is circulating or in the air, derives from the old concept of the "luminiferous ether" in physics, not directly from the chemical. It is included here due to the shared word root but represents a completely different concept.
  • There's a feeling of change in the ether at the company.

Noun

1. a colorless volatile highly inflammable liquid formerly used as an inhalation anesthetic