English Words Starting With Q

• quinestrol

  nounVery Low
  /kwɪˈnɛstrɒl/A synthetic, long-acting estrogen medication.
• quinhydrone

  nounVery low
  /kwɪnˈhaɪdrəʊn/A molecular compound formed from quinone and hydroquinone.
• quinic acid

  nounC2
  /ˌkwɪnɪk ˈæsɪd/A crystalline organic acid naturally found in cinchona bark, coffee beans, and some fruits.
• quinidine

  nounC2
  /ˈkwɪn.ɪ.diːn/A medication derived from cinchona bark, used to treat certain heart rhythm disorders (atrial fibrillation, atrial flutter).
• quiniela

  nounLow
  /kwɪˈniːələ/A type of lottery or betting pool, typically based on predicting sports results.
• quinine

  nounLow
  /ˈkwɪn.iːn/A bitter chemical compound obtained from cinchona tree bark, historically used as the primary treatment for malaria.
• quinine water

  nounC1
  /ˈkwɪn.iːn ˌwɔː.tər/A carbonated beverage flavoured with quinine, used historically as a tonic.
• quinn

  nounRare
  /kwɪn/A common Irish surname and sometimes a given name.
• quinnat salmon

  nounVery Low
  /ˈkwɪnət ˈsæmən/A very large Pacific salmon species (Oncorhynchus tshawytscha), also called the Chinook or king salmon, prized for its size and commercial value.
• quinoa

  nounC1
  /ˈkiːnwɑː/A highly nutritious, protein-rich grain-like seed harvested from a plant native to the Andes, used as a staple food.
• quinoid

  adjectivenounVery Low
  /ˈkwɪnɔɪd/A chemical compound or structure derived from or resembling quinone.
• quinoidine

  nounVery Low
  /kwɪˈnɔɪdiːn/A brownish-black, resinous mixture of alkaloids left as a residue in the manufacture of quinine from cinchona bark.
• quinol

  nounLow/Very Technical
  /ˈkwɪnɒl/A chemical compound, specifically a dihydroxy derivative of benzene, also known as hydroquinone.
• quinoline

  nounC2
  /ˈkwɪn.ə.liːn/A colorless, oily, nitrogenous organic compound with the formula C9H7N, with a characteristic pungent odour, first obtained from coal tar and later from various alkaloids.
• quinolone

  nounRare (C2+ Technical)
  /ˈkwɪn.ə.ləʊn/A class of synthetic broad-spectrum antibiotic drugs with a bicyclic core structure.
• quinone

  nounC2/Technical
  /kwɪˈnəʊn/A class of aromatic compounds, often yellow crystalline substances, derived from benzene by replacement of two hydrogen atoms with two oxygen atoms (C6H4O2).
• quinone diimine

  nounC2 - Very low frequency, specialized technical term.
  /ˌkwɪnəʊn daɪˈɪmiːn/A chemical compound derived from a quinone, where two carbonyl (C=O) groups are replaced by two imine (C=NH) groups. It is an organic intermediate with distinct reactivity.
• quinonimine

  nounVery Low / Technical
  /ˌkwɪnəʊˈnɪmiːn/A class of organic chemical compounds derived from quinone by replacing an oxygen atom with an imino group (=NH).
• quinoxaline

  nounLow (C2/Expert)
  /kwɪˈnɒksəliːn/A crystalline organic compound consisting of a benzene ring fused with a pyrazine ring, used primarily as a building block in pharmaceuticals, dyes, and other chemical syntheses.
• quinquagenarian

  adjectivenounVery Low
  /ˌkwɪŋkwədʒɪˈneəriən/A person who is between 50 and 59 years old.

Showing 581–600 of 698 words.