English Words Starting With A

• autobahn

  nounC1
  /ˈɔːtəʊbɑːn/A German motorway or expressway, typically with no speed limit on certain sections.
• autobio

  nounLow
  /ˌɔː.təʊˈbaɪ.əʊ/A short, informal term for autobiography; a written account of a person's own life.
• autobiog

  nounLow
  /ˌɔː.təʊˈbaɪ.ɒɡ/A common, informal clipping or shortening of the word 'autobiography'.
• autobiography

  nounB2
  /ˌɔːtəbaɪˈɒɡrəfi/An account of a person's life written by that person themselves.
• autobiography of alice b. toklas, the

  nounVery Low
  /ði ˌɔː.tə.baɪˈɒɡ.rə.fi əv ˈæl.ɪs biː ˈtəʊ.klæs/A 1933 book by Gertrude Stein, written in the voice of her lifelong partner, Alice B. Toklas, detailing their life together in the Parisian art world.
• autobus

  nounLow
  /ˈɔː.təʊ.bʌs/A motor vehicle designed to carry many passengers, typically along a fixed route.
• autocade

  nounRare
  /ˈɔː.tə.keɪd/A motorcade; a procession or parade of motor vehicles.
• autocatalysis

  nounC2
  /ˌɔːtəʊkəˈtæləsɪs/A chemical reaction in which one of the products acts as a catalyst for the same or a linked reaction, thereby accelerating the process.
• autocatharsis

  nounVery Rare
  /ˌɔːtəʊkəˈθɑːsɪs/The process of achieving emotional or psychological purification through one's own efforts, without external help.
• autocephaly

  nounC2
  /ˌɔː.təʊˈsef.əl.i/The independent self-governance of a Church, especially an Eastern Orthodox Church, from external ecclesiastical authority.
• autochanger

  nounLow
  /ˈɔːtəʊˌtʃeɪndʒə/A device that automatically changes or swaps one item for another, most commonly referring to a record player or CD player that holds multiple discs and can play them sequentially without manual intervention.
• autochrome

  nounC2 (Very Rare)
  /ˈɔːtə(ʊ)krəʊm/A historical early colour photography process that produced a transparent colour photograph on a glass plate.
• autochthon

  nounC2 / Very Low Frequency
  /ɔːˈtɒkθ(ə)n/An original or earliest known inhabitant of a place; an aborigine.
• autocide

  nounVery Low
  /ˈɔː.təʊ.saɪd/The act of killing oneself using a motor vehicle; suicide committed by intentionally crashing a car.
• autoclave

  nounverbverb-transitiveC1/C2
  /ˈɔː.tə.kleɪv/A strong, sealed container that uses high-pressure steam to sterilize equipment or carry out chemical reactions.
• autocollimation

  nounVery Low (Specialist Technical Term)
  /ˌɔːtəʊˌkɒlɪˈmeɪʃ(ə)n/The process or technique of aligning an optical system by reflecting a light beam back on itself using a collimator and a mirror, so that the outgoing and returning beams are parallel, allowing precise adjustment of optical components.
• autocollimator

  nounRare
  /ˌɔːtəʊˈkɒlɪmeɪtə/An optical instrument used for measuring small angles or deviations in the alignment of surfaces by projecting a beam of light and detecting its reflection.
• autocomplete

  nounverb-transitiveC1
  /ˌɔːtəʊkəmˈpliːt/A software feature that automatically suggests or finishes words or phrases as you start typing them.
• autocorrect

  nounverb-ambitransitiveB1
  /ˌɔː.təʊ.kəˈrekt/A software feature that automatically detects and corrects spelling, typographical, and grammatical errors as a user types.
• autocorrelation

  nounC2
  /ˌɔːtəʊˌkɒrɪˈleɪʃ(ə)n/A statistical measure of how a signal or time series is correlated with a delayed copy of itself; self-similarity across different points in time.

Showing 8241–8260 of 8734 words.