English Words Starting With A

• acetonemia

  nounC2 (Specialized Technical)
  /ˌæs.ɪ.təʊˈniː.mi.ə/A medical condition where there is an abnormally high level of ketone bodies (acetone, acetoacetate, and beta-hydroxybutyrate) in the blood, most commonly associated with uncontrolled diabetes mellitus or starvation.
• acetonitrile

  nounVery Low Frequency (C2 Level)
  /ˌæs.ɪ.təʊˈnaɪ.traɪl/A colourless, flammable organic solvent and reagent with the chemical formula CH₃CN, also known as methyl cyanide.
• acetonuria

  nounVery Low
  /ˌæs.ɪ.təʊˈnjʊə.ri.ə/The medical condition of having acetone (ketone bodies) in the urine.
• acetophenetidin

  nounVery Low
  /əˌsiːtəʊfɪˈnɛtɪdɪn/A chemical compound historically used as an analgesic (pain reliever) and antipyretic (fever reducer), chemically known as phenacetin.
• acetophenone

  nounVery low
  /ˌæsɪtəʊˈfiːnəʊn/A colorless liquid organic compound with the formula C₆H₅C(O)CH₃, used as a solvent and in organic synthesis.
• acetostearin

  nounextremely rare / obsolete
  /ˌæsɪtəʊˈstɪərɪn/An ester formed from acetic acid and stearin (a solid fat from animal or vegetable sources), used historically in food and industrial applications.
• acetum

  nounRare
  /əˈsiːtəm/Vinegar or a sour liquid derived from acetic acid.
• acetyl

  adjectivenounC2
  /ˈasɪtʌɪl/The univalent chemical group CH3CO-, derived from acetic acid.
• acetyl chloride

  nounC2 / Very Low Frequency (Specialist Technical)
  /ˌæsɪtaɪl ˈklɔːraɪd/A highly reactive and corrosive chemical compound with the formula CH₃COCl, used as an acetylating agent in organic synthesis.
• acetyl group

  nounC1
  /ˈæsɪtaɪl ɡruːp/A functional group in organic chemistry with the formula –C(O)CH₃, derived from acetic acid.
• acetyl-coenzyme a

  nounVery Low
  /ˌæsɪtəl kəʊˌɛnzaɪm ˈeɪ/A crucial metabolic intermediate that serves as a key carrier of acetyl groups in numerous biochemical reactions, most notably in the Krebs (citric acid) cycle.
• acetylaniline

  nounC2 / Highly Technical
  /əˌsiːtɪlˈænɪliːn/A specific organic compound, an aniline derivative where a hydrogen atom is replaced by an acetyl group.
• acetylate

  verbverb-intransitiveverb-transitiveLow
  /əˈsɛtɪleɪt/To introduce an acetyl group into (a molecule or compound).
• acetylbenzene

  nounC2
  /ˌæsɪtaɪlˈbɛnziːn/An organic chemical compound consisting of a benzene ring bonded to an acetyl group.
• acetylcholine

  nounC1/C2
  /ˌasɪtʌɪlˈkəʊliːn/A chemical compound that functions as a neurotransmitter in the nervous systems of many organisms, transmitting signals across nerve synapses.
• acetylcholinesterase

  nounC2
  /ˌæsɪtaɪlˌkəʊliːnˈɛstəreɪz/An enzyme that breaks down the neurotransmitter acetylcholine into choline and acetate, terminating its signal at cholinergic synapses.
• acetylcysteine

  nounC2
  /ˌæs.ɪ.taɪlˈsɪs.ti.iːn/A mucolytic agent derived from the amino acid L-cysteine, used to break up thick mucus in the lungs.
• acetylene

  nounLow
  /əˈsɛtɪliːn/A colourless, flammable hydrocarbon gas (C₂H₂) with a characteristic odour, used in welding and metal cutting due to the high temperature of its flame.
• acetylformic acid

  nounC1 (Very low frequency; highly specialised)
  /ˌasɪtʌɪlˈfɔːmɪk ˈasɪd/A colourless, unstable organic acid that can be formed during the decomposition of sugars and is an intermediate in carbohydrate metabolism.
• acetylide

  nounC2
  /əˈsɛtɪlaɪd/A chemical compound containing the acetylide ion (C₂²⁻) or group, typically formed by the reaction of an alkali metal or alkaline earth metal with acetylene.

Showing 721–740 of 8734 words.