English Words Starting With A

• acaroid gum

  nounC2+ / Specialized
  /ˈækərɔɪd ɡʌm/A resin obtained from Australian grass-trees (genus Xanthorrhoea), used historically in varnishes and adhesives.
• acaroid resin

  nounVery Low
  /ˈakərɔɪd ˈrɛzɪn/A natural resin obtained from various Australian grass trees (genus Xanthorrhoea), historically used in varnishes, lacquers, and adhesives.
• acarology

  nounVery low
  /ˌækəˈrɒlədʒi/The scientific study of mites and ticks.
• acarophobia

  nounRare (Specialist/Technical)
  /ˌak(ə)rə(ʊ)ˈfəʊbɪə/An intense, irrational fear of mites, ticks, or small insects, often involving contamination.
• acarus

  nounRare
  /ˈækərəs/A microscopic mite, especially of the genus Acarus, that typically infests stored food or causes skin irritation.
• acatalectic

  adjectivenounVery rare
  /eɪˌkætəˈlɛktɪk/A line of verse having the full number of syllables in its final foot.
• acatalepsy

  nounVery Rare (Specialist)
  /eɪˈkæt.əˌlep.si/The philosophical doctrine that true knowledge is impossible; the state of being impossible to know or understand with certainty.
• accad

  nounExtremely Rare / Archaic
  /ˈækæd/An archaic or poetic term meaning to decline, fade, or fall away; to become less distinct or intense.
• accademia

  nounC1
  /ˌæk.əˈdiː.mi.ə/The community, environment, or activities associated with higher education, scholarly research, and intellectual life, typically within universities and colleges.
• accardo

  nounExtremely rare / Proper noun
  /əˈkɑːdəʊ/A proper noun referring to a person's surname. The word exists primarily as a family name and does not have a standard dictionary entry with common noun meaning.
• accede

  verbverb-intransitiveC1-C2
  /əkˈsiːd/To agree to a request, demand, or proposal.
• accelerando

  adjectiveadverbnounC2
  /əkˌsɛləˈrandəʊ/A musical instruction indicating a gradual increase in tempo.
• accelerant

  nounC1/C2
  /əkˈsel.ər.ənt/A substance used to increase the speed or intensity of a process, typically fire.
• accelerate

  verbverb-intransitiveverb-transitiveB2
  /əkˈsel.ə.reɪt/To begin to move or proceed more quickly; to cause something to increase in speed or rate.
• accelerated reader

  nounLow (as a term for a person), Medium (as a proper noun for the program)
  /əkˈsel.ə.reɪ.tɪd ˈriː.dər/A student who reads at a faster pace and/or more advanced level than typical for their age group.
• acceleration

  nounC1
  /əkˌsel.əˈreɪ.ʃən/The rate at which the velocity of an object increases over time; a process of becoming faster.
• acceleration clause

  nounC2
  /əkˌsɛləˈreɪʃən ˌklɔːz/A provision in a loan or credit agreement stating that if certain conditions are not met (e.g., a missed payment or breach of contract), the entire remaining debt becomes due immediately.
• acceleration coefficient

  nounC2
  /əkˌseləˈreɪʃən ˌkəʊɪˈfɪʃənt/A numerical factor expressing the relationship between a change in investment and the resulting change in output or national income, central to accelerator theory in economics.
• acceleration of free fall

  nounC1-C2
  /əkˌsel.əˈreɪ.ʃən əv ˌfriː ˈfɔːl/The constant rate of increase in velocity of an object falling freely under the influence of gravity alone, ignoring air resistance.
• acceleration of gravity

  nounLow (C2)
  /əkˌsel.əˈreɪ.ʃən əv ˈɡræv.ə.ti/The constant rate at which an object accelerates when falling freely under the influence of Earth's gravitational force, ignoring air resistance.

Showing 501–520 of 8734 words.