English Words Starting With A

• act of toleration

  nounLow
  /ˌækt əv ˌtɒl.əˈreɪ.ʃən/An official declaration or law passed by a government or religious authority that grants freedom of worship to religious groups previously persecuted or not officially recognized, allowing them to practice their faith without legal penalty.
• act of uniformity

  nounLow
  /ˌækt əv ˌjuːnɪˈfɔːməti/A specific law passed by a parliament, especially the English/British Parliament, establishing official conformity in religious practice, doctrine, and liturgy.
• act of war

  nounC1
  /ˌækt əv ˈwɔː(r)/An action (usually military) by one state or nation that is legally and politically considered to be a declaration of war against another, justifying retaliation.
• act on

  verbB2 (Upper Intermediate)
  /ækt ɒn/To take action in response to or based on something, often an instruction, advice, information, or feeling.
• act out

  verbB2
  /ˌækt ˈaʊt/To perform or express something through actions, often a story, script, or emotion, rather than just describing it verbally.
• act up

  verbB1 (Intermediate)
  /ˌækt ˈʌp/to behave badly or dysfunctionally
• act warning

  nounB1
  /ˈwɔːnɪŋ/A statement or event that informs someone about a possible danger, problem, or undesirable consequence.
• acta

  plural-nounC2
  /ˈæk.tə/The plural form of 'actum', meaning official records or proceedings, especially of a meeting or academic society.
• acta sanctorum

  nounRare
  /ˌæk.tə sæŋkˈtɔː.rəm/A Latin phrase meaning 'deeds/records of the saints'. Historically refers to collections of documents about the lives and martyrdoms of Christian saints.
• actaeon

  nounRare
  /ækˈtiːən/Proper noun referring to a figure from Greek mythology, a hunter who saw the goddess Artemis bathing and was transformed into a stag, then torn apart by his own hounds.
• actant

  nounLow
  /ˈæk.tənt/A participant in an action or process, especially a key participant in a narrative or semantic structure.
• acth

  abbreviationnounTechnical/Low Frequency
  /ˌeɪˌsiːˌtiːˈeɪtʃ/A hormone produced by the pituitary gland that stimulates the adrenal glands.
• actin

  nounLow (Specialist/B2-C2)
  /ˈaktɪn/A globular protein that polymerizes to form microfilaments, a major component of the cytoskeleton in eukaryotic cells and essential for muscle contraction and cell movement.
• acting

  adjectivenounB1
  /ˈaktɪŋ/The art, process, or occupation of performing in plays, films, or television.
• acting area

  nounC1/C2
  /ˈæktɪŋ ˌeə.ri.ə/The specific, defined space within a theatre stage where the performance by the actors takes place.
• actinia

  nounVery Low (C2+)
  /ækˈtɪnɪə/A genus of sea anemone, or any anemone of the family Actinidae; a sessile marine polyp with tentacles.
• actinian

  adjectivenounC2
  /akˈtɪnɪən/A marine animal of the order Actiniaria; a sea anemone.
• actinic ray

  nounVery low
  /ækˈtɪn.ɪk ˌreɪ/Electromagnetic radiation, especially in the ultraviolet or blue-violet parts of the spectrum, that causes chemical changes, such as in photography or photochemical processes.
• actinide

  nounC2
  /ˈæktɪnaɪd/Any of a series of radioactive chemical elements from actinium onward (atomic numbers 89–103).
• actinide series

  nounlow
  /ˈæktɪnaɪd ˈsɪəriːz/A group of 15 metallic radioactive elements with atomic numbers from 89 to 103.

Showing 1001–1020 of 8734 words.