English Words Starting With A

• acetaldol

  nounExtremely Low
  /ˌæsɪˈtældɒl/A specific chemical compound (3-hydroxybutanal) formed by the aldol condensation of acetaldehyde.
• acetamide

  nounC2
  /ˌasɪˈtæmʌɪd/, /əˈsiːtəmaɪd/A white crystalline solid, the amide of acetic acid, with the chemical formula CH₃CONH₂.
• acetaminophen

  nounMedium
  /ˌæs.ɪ.təˈmɪn.ə.fen/A common, over-the-counter medication used to reduce pain and fever.
• acetanilide

  nounC2 (Very Low Frequency / Specialist Term)
  /ˌasɪˈtanɪlʌɪd/A white crystalline compound derived from aniline and acetic acid, formerly used as an analgesic and antipyretic drug, now primarily of interest in chemical and pharmaceutical contexts.
• acetanisidine

  nounVery Rare
  /ˌæsɪtænɪˈsɪdɪn/A chemical compound, specifically the methyl ether derivative of acetaminophen or a related aniline derivative.
• acetate

  nounC1
  /ˈæsɪteɪt/A salt or ester of acetic acid, often used in chemical compounds and materials.
• acetate rayon

  nounC2
  /ˈæsɪteɪt ˈreɪɒn/A semi-synthetic textile fiber made from cellulose acetate.
• acetazolamide

  nounVery low
  /ˌæs.ɪ.təˈzɒl.ə.maɪd/A prescription drug that reduces fluid pressure in the eye and body by inhibiting the enzyme carbonic anhydrase.
• acetic acid

  nounC2
  /əˌsiːtɪk ˈæsɪd/The clear, colourless, corrosive organic acid that gives vinegar its sour taste and pungent smell. Chemical formula: CH₃COOH.
• acetic anhydride

  nounRare (C2+ technical/scientific)
  /əˌsiːtɪk ænˈhaɪdraɪd/A colorless organic compound with the formula (CH3CO)2O, which reacts vigorously with water to form acetic acid.
• acetify

  verbverb-ambitransitiveLow (C2 level / specialist vocabulary)
  /əˈsiːtɪfaɪ/To convert into acetic acid or vinegar; to turn sour.
• acetimeter

  nounVery low
  /ˌasɪˈtɪmɪtə/An instrument or apparatus for measuring the strength or concentration of acetic acid, especially in vinegar.
• acetin

  nounVery Low
  /ˈæsɪtɪn/A colourless, viscous liquid ester derived from glycerol and acetic acid.
• acetoacetic acid

  nounVery low frequency
  /ˌæsɪtəʊəˈsiːtɪk ˈæsɪd/A ketone body produced during the metabolism of fatty acids.
• acetobacter

  nounlow
  /ˌæsɪtəʊˈbæktə/A genus of Gram-negative, aerobic bacteria that oxidize ethanol to acetic acid during vinegar production.
• acetoin

  nounRare (Technical/Scientific)
  /ˈæsɪtəʊɪn/A ketone compound with a buttery or creamy aroma, produced by fermentation and found in foods like butter, beer, and wine.
• acetometer

  nounVery Low / Technical
  /ˌæsɪˈtɒmɪtə/A laboratory instrument for measuring the strength of vinegar or acetic acid.
• acetonaemia

  nounVery Rare
  /əˌsiːtə(ʊ)ˈniːmɪə/A medical condition characterized by an abnormally high concentration of ketone bodies (especially acetone) in the bloodstream.
• acetone

  nounC1
  /ˈæs.ɪ.təʊn/A colourless, flammable liquid solvent (C₃H₆O) used especially in nail polish remover and as an industrial cleaner.
• acetone body

  nounRare
  /ˈæs.ɪ.təʊn ˌbɒd.i/A chemical compound produced by the liver during the metabolism of fatty acids when glucose is unavailable, notably in starvation or uncontrolled diabetes.

Showing 701–720 of 8734 words.