English Words Starting With E

• ethoxy

  nounVery low (C2)
  /ˈɛθ.ɒk.si/ or /ɛˈθɒk.si/A chemical group or substituent derived from ethanol, consisting of an ethyl group (C2H5) linked to an oxygen atom (O). It is used as a prefix in the names of organic compounds (e.g., ethoxyethane).
• ethoxyethane

  nounC2 (Specialist)
  /ɛˌθɒksɪˈiːθeɪn/A colourless, volatile, highly flammable liquid chemical compound, commonly known as diethyl ether, used historically as a general anaesthetic and as a solvent in laboratories.
• ethrog

  nounRare
  /ˈɛθrɒɡ/The citron fruit used in Jewish rituals during the festival of Sukkot.
• ethyl

  adjectivenounC2+ (High frequency in technical/scientific contexts, very low in general English)
  /ˈɛθɪl/a univalent hydrocarbon radical, C₂H₅, derived from ethane, that forms part of many organic compounds.
• ethyl acetate

  nounC2+
  /ˌɛθəl ˈæsɪteɪt/A colourless, flammable organic compound with a sweet, fruity odour, used as a solvent and in artificial flavours.
• ethyl alcohol

  nounMedium
  /ˌiːθaɪl ˈælkəhɒl/The pure form of alcohol (C₂H₅OH) used in drinks, fuel, and as an industrial solvent.
• ethyl aminobenzoate

  nounRare
  /ˈiːθʌɪl əˌmiːnəʊˈbɛnzəʊeɪt/A white crystalline powder, specifically the ethyl ester of para-aminobenzoic acid (PABA), used as a local anesthetic and analgesic.
• ethyl butyrate

  nounVery Low Frequency
  /ˌiːθaɪl ˈbjuːtɪreɪt/A colourless, volatile ester with the chemical formula C6H12O2, formed from ethanol and butyric acid.
• ethyl caproate

  nounVery low
  /ˌiːθaɪl ˈkæprəʊeɪt/A chemical ester with a fruity, pineapple-like odour, used as a flavoring agent in food and fragrances.
• ethyl carbamate

  nounC2
  /ˈiːθaɪl ˈkɑːbəmeɪt/A chemical compound with the formula C₃H₇NO₂, historically used as a sedative and currently found as a trace contaminant in fermented foods and beverages.
• ethyl cellulose

  nounRare
  /ˈiːθaɪl ˈsɛljʊləʊz/A semi-synthetic polymer derived from cellulose where some of the hydroxyl groups are replaced with ethyl ether groups.
• ethyl chloride

  nounLow
  /ˈɛθɪl ˈklɔːrʌɪd/A volatile, flammable chemical compound with the formula C₂H₅Cl, used historically as a refrigerant, aerosol propellant, and topical anesthetic.
• ethyl enanthate

  nounVery Low
  /ˈɛθɪl ɪˈnænθeɪt/A synthetic ester of ethyl alcohol and enanthic acid (heptanoic acid), used primarily as an anabolic steroid in medical and performance-enhancing contexts.
• ethyl ether

  nounLow frequency. Primarily used in scientific, medical, and industrial contexts.
  /ˌɛθaɪl ˈiːθə/A colourless, volatile, highly flammable liquid chemical compound (C₄H₁₀O) used as a solvent and formerly as a general anaesthetic.
• ethyl group

  nounC2
  /ˈɛθɪl ɡruːp/A functional group in organic chemistry consisting of a two-carbon alkyl chain (-CH₂CH₃) derived from ethane (C₂H₆).
• ethyl hexoate

  nounVery Low
  /ˈɛθɪl ˈhɛksəʊeɪt/A synthetic ester used primarily as a fragrance and flavoring agent, giving a fruity, often green, apple-like scent.
• ethyl malonate

  nounVery Low (Technical)
  /ˌɛθɪl ˈmæləneɪt/A specific ester used in organic synthesis, formed from malonic acid and ethanol.
• ethyl mercaptan

  nounLow-frequency (technical term)
  /ˈɛθaɪl məˈkaptan/A volatile, foul-smelling sulfur compound (C2H5SH) added to odourless natural gas and propane as a safety measure to alert people to leaks.
• ethyl nitrate

  nounC2
  /ˈɛθɪl ˈnaɪtreɪt/A chemical compound consisting of an ethyl group bonded to a nitrate group, with the formula C₂H₅NO₃.
• ethyl nitrite

  nounC2
  /ˈiːθaɪl ˈnaɪtraɪt/A simple aliphatic ester of nitrous acid and ethyl alcohol, a volatile, flammable liquid with a characteristic sweet odour.

Showing 3661–3680 of 4896 words.