English Words Starting With I

• instrumentality

  nounC1/C2
  /ˌɪn.strə.menˈtæl.ə.ti/The fact or quality of serving as a means or instrument to achieve an end or purpose.
• instrumentation

  nounC1
  /ˌɪn.strə.menˈteɪ.ʃən/The set of instruments or devices used for measuring, controlling, or recording something, especially in scientific, technical, or musical contexts.
• insubordinate

  adjectivenounC1
  /ˌɪnsəˈbɔːdɪnət/A person who is unwilling to submit to authority or disobedient; a descriptive term for such behaviour.
• insubordination

  nounC1
  /ˌɪnsəˌbɔːdɪˈneɪʃn/Defiance of authority; refusal to obey orders.
• insufficiency

  nounC1
  /ˌɪnsəˈfɪʃ(ə)nsi/The state or condition of not being enough or adequate in amount, quantity, or quality.
• insufflate

  verbverb-transitiveC2
  /ˈɪnsʌfleɪt/To blow or breathe (air, powder, a drug, etc.) into a body cavity or onto a surface.
• insula

  nounVery Low
  /ˈɪnsjʊlə/A Latin-derived anatomical term for a discrete region of the cerebral cortex, deeply situated within the lateral sulcus of the brain.
• insulant

  nounRare/Technical
  /ˈɪnsjʊlənt/A material used to prevent the transfer of heat, sound, or electricity.
• insular

  adjectivenounC1
  /ˈɪnsjʊlə/Pertaining to an island; separated or detached from surrounding influences.
• insular celtic

  nounC2
  /ˌɪnsjʊlə ˈkeltɪk/A branch of the Celtic languages historically spoken in the British Isles, comprising the Goidelic (Gaelic) and Brittonic (Brythonic) sub-families.
• insular dwarfism

  nounLow (Specialist)
  /ˈɪnsjʊlə ˈdwɔːfɪz(ə)m/A biological phenomenon where the size of large animal species isolated on islands decreases over generations.
• insular gigantism

  nounLow
  /ˈɪnsjʊlə dʒaɪˈɡæntɪzəm/An evolutionary process where the size of an animal species isolated on an island increases significantly over generations compared to its mainland relatives.
• insularity

  nounC1
  /ˌɪn.sjəˈlær.ə.ti/The state or quality of being isolated, narrow-minded, or ignorant of broader perspectives, often due to geographical isolation or a lack of external contact.
• insularize

  verb-transitiveLow
  /ˈɪnsjʊləɹʌɪz/To make something isolated, detached, or narrowly provincial in scope or outlook.
• insulate

  verbverb-transitiveC1
  /ˈɪnsjʊleɪt/to cover or surround something with a material that stops heat, electricity, or sound from escaping or entering.
• insulating tape

  nounB2
  /ˈɪnsjʊleɪtɪŋ teɪp/A type of tape, typically made of PVC or vinyl with an adhesive backing, used primarily to wrap electrical wires and cables to prevent electric shock or short circuits by providing an insulating barrier.
• insulation

  nounB2
  /ˌɪnsjʊˈleɪʃn/Material or a method used to prevent the passage of heat, sound, electricity, or liquid from one area to another.
• insulator

  nounC1
  /ˈɪnsjʊleɪtə/A material or device that prevents the passage of electricity, heat, or sound.
• insulin

  nounC2
  /ˈɪnsjʊlɪn/A hormone produced in the pancreas which regulates the amount of glucose in the blood.
• insulin pump

  nounLow-to-Medium (technical/medical context); Rare (general discourse)
  /ˈɪnsjʊlɪn pʌmp/A portable, wearable medical device that delivers a continuous or controlled dose of insulin into the body.

Showing 2141–2160 of 3621 words.