English Words Starting With A

• acaleph

  nounExtremely Rare / Obsolete Scientific
  /ˈækəlɛf/A marine invertebrate animal of a former classification group (Acalephae), including jellyfish and similar creatures, characterized by stinging tentacles.
• acanthite

  nounExtremely low
  /əˈkanθʌɪt/A specific mineral composed of silver sulfide (Ag₂S), which is the primary ore of silver.
• acanthocephalan

  adjectivenounVery Low (C2+)
  /əˌkænθəʊˈsɛfələn/A parasitic worm of the phylum Acanthocephala, characterised by a spiny, retractable proboscis.
• acanthocyte

  nounC2
  /əˈkænθə(ʊ)saɪt/An abnormal red blood cell with spiny projections from the cell surface.
• acanthocytosis

  nounExtremely Low
  /əˌkænθəʊsaɪˈtəʊsɪs/A condition characterized by the presence of abnormal, spiky red blood cells in the bloodstream.
• acanthodian

  nounRare
  /ˌækənˈθəʊdɪən/Any member of an extinct group of small, spiny, jawed fish that lived from the Silurian to the Permian period.
• acanthology

  nounExtremely low
  /ˌækənˈθɒlədʒi/The scientific study or description of spines and thorns, typically in plants or certain animals like sea urchins.
• acanthopterygian

  adjectivenounExtremely rare / Technical
  /əˌkanθɒptəˈrɪdʒɪən/A fish belonging to the large order Acanthopterygii, characterized by spiny fin rays.
• acanthus

  nounC2
  /əˈkænθəs/A plant of the genus Acanthus, native to the Mediterranean, with large spiny leaves. Also, an ornamental design based on the leaves of this plant, used notably in Corinthian and Composite orders of architecture.
• acanthus family

  nounC2
  /əˈkænθəs ˈfæmɪli/A botanical term referring to a large family of flowering plants, Acanthaceae, characterized by often spiny leaves and bilaterally symmetrical flowers.
• acapnia

  nounLow / Very Specialized
  /eɪˈkapnɪə/A deficiency of carbon dioxide in the blood, typically resulting from hyperventilation.
• acapulco

  nounC2
  /ˌæk.əˈpʊl.kəʊ/A major port city and tourist destination on the Pacific coast of Mexico.
• acapulco gold

  nounC2
  /ˌækəˌpʊlkəʊ ˈɡəʊld/A specific, potent variety of cannabis (marijuana) originally cultivated in the Acapulco region of Mexico, known for its golden-brown colour and high THC content.
• acarbose

  nounLow/Technical
  /ˈeɪkɑːbəʊz/An oral anti-diabetic drug used to treat type 2 diabetes mellitus.
• acardia

  nounVery Low
  /eɪˈkɑː.di.ə/A congenital absence of the heart.
• acariasis

  nounC2 (Rare)
  /ˌakəˈrʌɪəsɪs/An infestation with or disease caused by mites.
• acaricide

  nounC1/C2
  /əˈkærɪsaɪd/A chemical substance used to kill mites and ticks.
• acarid

  adjectivenounC2
  /ˈæk.ər.ɪd/A small arachnid belonging to the order Acari; a mite or tick.
• acarine

  adjectivenounC2
  /ˈakəriːn/Of or relating to ticks and mites (Order Acarina).
• acarnania

  nounVery Low (C2+ / Academic)
  /ˌækɑːrˈneɪniə/An ancient geographical region in western Greece.

Showing 481–500 of 8734 words.