English Words Starting With A

• atomy

  nounVery Rare (Archaic/Poetic)
  /ˈætəmi/An obsolete term for a skeleton, a very thin or emaciated person, or a tiny particle.
• aton

  nounVery low
  /əˈtəʊn/To make amends, to reconcile, or to bring into agreement; to expiate. Archaic or literary form of 'atone'.
• atonalism

  nounC2
  /eɪˈtəʊnəlɪz(ə)m/The theory, principle, or practice of composing music without a tonal centre or key.
• atonality

  nounC1
  /ˌeɪ.təˈnæl.ə.ti/The absence of a tonal center or key in music.
• atone

  verbverb-intransitiveverb-transitiveC1-C2
  /əˈtəʊn/To make amends or reparation for a wrong or injury; to reconcile or restore friendly relations.
• atonement

  nounC1
  /əˈtəʊnmənt/The act of making amends or reparation for a wrong or injury, often involving compensation or action to restore a right relationship, particularly between a person and God.
• atonic

  adjectivenounLow Frequency
  /eɪˈtɒnɪk/Without stress or accent, particularly referring to an unstressed syllable in linguistics, or lacking normal muscle tone in medicine.
• atonicity

  nounRare
  /ˌeɪ.təˈnɪs.ə.ti/The state or quality of lacking tone, muscular tension, or stress.
• atony

  nounRare
  /ˈæt.ə.ni/The condition or quality of lacking normal tone or tension, especially in muscles; flaccidity.
• atopy

  nounLow
  /ˈætəpi/A genetic predisposition to developing allergic hypersensitivity reactions, such as asthma, eczema, or hay fever, upon exposure to common environmental allergens.
• atorvastatin

  nounC2 (Very Low Frequency outside medical/health contexts)
  /ˌatəˈvastətɪn/A statin medication used to lower high levels of cholesterol and triglycerides in the blood, primarily to prevent cardiovascular disease.
• atp

  abbreviationnounMedium to low in general usage, high in biological/chemical contexts
  /eɪ tiː ˈpiː/Adenosine triphosphate, the primary energy-carrying molecule in cells of all living organisms.
• atpase

  nounC1
  /ˌeɪ.tiːˈpiː.eɪz/An enzyme that hydrolyses adenosine triphosphate (ATP) to release energy.
• atrahasis

  nounVery Low
  /əˈtrɑːhəsɪs/A Mesopotamian mythical figure, a righteous man chosen by the gods to survive a great flood; also the title of an Akkadian epic poem.
• atrazine

  nounLow
  /ˈætrəziːn/A selective herbicide used to control broadleaf and grassy weeds, particularly in corn, sorghum, and sugarcane crops.
• atrek

  nounRare/Literary
  /əˈtrɛk/To venture out on a journey or expedition, especially one perceived as challenging or arduous.
• atresia

  nounVery Low
  /əˈtriːziə/A congenital absence or abnormal narrowing of a bodily passage or orifice.
• atreus

  nounLow (specialized/classical)
  /ˈeɪtriəs/In Greek mythology, a king of Mycenae, father of Agamemnon and Menelaus, and founder of the cursed House of Atreus.
• atrial fibrillation

  nounC2
  /ˌeɪ.tri.əl ˌfɪb.rɪˈleɪ.ʃən/A common type of cardiac arrhythmia (abnormal heartbeat) where the atria (upper chambers of the heart) beat rapidly and irregularly, out of coordination with the ventricles.
• atrial natriuretic factor

  nounRare
  /ˌeɪ.tri.əl ˌneɪ.trɪ.jʊˈrɛ.tɪk ˈfæk.tə/A hormone produced by heart muscle cells that helps regulate blood pressure and fluid balance by increasing sodium excretion in urine.

Showing 7801–7820 of 8734 words.