English Words Starting With I

• id card

  nounB2
  /ˌaɪ ˈdiː ˌkɑːd/A plastic or paper card bearing a person's name, date of birth, photograph, and other unique details, issued by an authority to verify their identity.
• id-ul-adha

  nounLow
  /ˌiːd ʊl ˈɑːdə/The Islamic 'Festival of Sacrifice', commemorating the willingness of Ibrahim (Abraham) to sacrifice his son as an act of obedience to God.
• id-ul-fitr

  nounLow-Medium
  /ˌiːd æl ˈfiːtə/The Muslim festival marking the end of Ramadan, the holy month of fasting.
• ida

  nounVery Low (as a common noun it is not standard; frequency relates to its use as a name or in classical references).
  /ˈʌɪdə/A female given name of Germanic origin.
• idaho

  nounC1
  /ˈaɪdəhəʊ/A state in the northwestern United States, known for its mountainous terrain, potatoes, and agriculture.
• idaho falls

  nounLow
  /ˌaɪ.də.həʊ ˈfɔːlz/A city in the eastern part of the US state of Idaho.
• idahoan

  adjectivenounC1
  /ˌaɪ.dəˈhəʊ.ən/A person from the US state of Idaho.
• iddhi

  nounLow
  /ˈɪd.i/Supernatural or psychic power, especially in Buddhist and Hindu traditions.
• ide

  abbreviationnounVery Low
  /aɪd/A freshwater fish of the carp family, native to Europe and Asia, typically with a silvery body and red fins.
• idea

  nounA1
  /aɪˈdɪə/A thought, suggestion, or concept formed in the mind.
• idea hamster

  nounLow (Specialised Slang)
  /aɪˈdɪə ˈhæm.stə/A person who continuously generates many creative ideas, often as part of their job or personality.
• idea man

  nounLow to Medium
  /aɪˈdɪə ˌmæn/A person who is skilled at generating new, creative, or innovative ideas, especially in a business, organizational, or project context.
• idea of pure reason

  nounC2
  /aɪˈdɪə əv ˌpjʊə ˈriːzn̩/A philosophical concept originating from Immanuel Kant, referring to transcendent concepts of reason that lie beyond possible experience (e.g., God, freedom, immortality). They are regulative principles that guide thought but cannot be proven as objects of knowledge.
• ideal

  adjectivenounHigh frequency
  /aɪˈdɪəl/Perfectly suitable, representing the best possible example of something; a standard of excellence to strive for.
• ideal crystal

  nounC2
  /aɪˈdɪəl ˈkrɪstl/A theoretical model of a crystal with a perfectly periodic atomic structure, free from any defects, impurities, or boundaries.
• ideal element

  nounC2
  /aɪˈdɪəl ˈɛlɪmənt/An abstract, non-physical component added to a mathematical structure or system to complete it, simplify its properties, or make its theory more elegant.
• ideal gas

  nounC2
  /aɪˈdɪəl ɡæs/A theoretical gas composed of many randomly moving point particles that do not interact except when they collide elastically; it obeys the ideal gas law (PV=nRT).
• ideal gas law

  nounC1+
  /aɪˈdɪəl ɡæs lɔː/A fundamental equation in physics and chemistry, PV = nRT, that describes the relationship between pressure, volume, amount, and temperature of an ideal gas.
• ideal of pure reason

  nounC2
  /aɪˈdɪəl əv ˌpjʊə ˈriːzn̩/A concept in Kantian philosophy referring to a necessary, regulative idea that arises from pure reason itself, such as God, the soul, or the world as a totality, which cannot be directly experienced but serves as a goal for systematic thought.
• ideal point

  nounLow
  /aɪˈdɪəl pɔɪnt/A theoretical, perfect position or state in an abstract space; a limit concept (especially in geometry or decision theory) where parallel lines meet or preferences converge.

Showing 221–240 of 3621 words.