English Words Starting With I

• isoproterenol

  nounC2 (Specialized Medical Terminology)
  /ˌʌɪsə(ʊ)prəˈtɛrənɒl/A synthetic sympathomimetic amine used as a bronchodilator and cardiac stimulant.
• isopycnal

  nounVery low
  /ˌaɪsəʊˈpɪknəl/A surface of constant density in a fluid, such as seawater or air.
• isopycnic

  adjectivenounC2 (very rare)
  /ˌaɪ.sə(ʊ)ˈpɪk.nɪk/Having equal density.
• isopyre

  nounRare
  /ˈaɪ.sə(ʊ).paɪə/A type of altered pyroxene or mineral, resembling jade.
• isorhythm

  nounC2
  /ˌaɪsə(ʊ)ˈrɪðəm/A compositional technique, primarily in Medieval and Renaissance music, where a repeating rhythmic pattern (talea) is combined with a repeating melodic pattern (color) that are not of the same length.
• isoseismal

  adjectivenounVery Rare
  /ˌaɪ.səʊˈsaɪz.məl/Relating to or connecting points on the earth's surface at which earthquake shock is of the same intensity.
• isoseismic

  adjectivenounVery Low (Specialist Scientific Term)
  /ˌaɪ.səʊˈsaɪz.mɪk/Relating to or connecting points on the earth's surface at which earthquake shock is felt with equal intensity.
• isosorbide dinitrate

  nounTechnical/Low-Frequency
  /ˌaɪsəʊˈsɔːbaɪd daɪˈnaɪtreɪt/A nitrate medication primarily used to treat and prevent angina pectoris (chest pain due to heart disease), typically taken sublingually or orally.
• isospin

  nounC2/Technical
  /ˈaɪ.sə(ʊ).spɪn/A quantum number in particle physics, representing symmetry between different types of hadrons (like protons and neutrons).
• isostasy

  nounC2 (Very low frequency; specialized academic/technical term)
  /aɪˈsɒstəsi/The state of gravitational equilibrium between the Earth's lithosphere and asthenosphere, where the lithosphere 'floats' at an elevation determined by its thickness and density.
• isostere

  nounVery low
  /ˈaɪ.sə(ʊ).stɪə/A compound or molecule that shares similar physical properties (e.g., size, shape, electron distribution) with another, often used in drug design.
• isosterism

  nounRare
  /ˌaɪsəʊˈstɛrɪz(ə)m/The phenomenon in chemistry where molecules or ions have the same number of atoms and valence electrons.
• isotac

  nounVery Low
  /ˈaɪ.səʊ.tæk/A line on a map connecting points where ice melts at the same time of year.
• isotach

  nounVery Low / Technical
  /ˈaɪsəʊˌtæk/A line on a map or chart connecting points of equal wind speed.
• isoteniscope

  nounExtremely Rare / Technical
  /ˌaɪsəʊˈtɛnɪskəʊp/A scientific instrument used to measure the vapour pressure of a liquid.
• isothere

  nounVery Low (C2+)
  /ˈaɪ.səʊ.θɪə/A line on a map connecting places that have the same average summer temperature.
• isotherm

  nounLow frequency (C2 level), specialized term.
  /ˈaɪ.sə.ðɜːm/A line on a map or chart connecting points having the same temperature at a given time or over a given period.
• isothermal

  adjectivenounC1+ (Advanced, Technical)
  /ˌaɪ.səˈθɜː.məl/Pertaining to or indicating equal temperature; occurring at a constant temperature.
• isothermal process

  nounLow in general discourse; Very High in thermodynamics/physics contexts.
  /ˌaɪsəʊˈθɜːməl ˈprəʊsɛs/A thermodynamic process in which the temperature of the system remains constant.
• isothermobath

  nounVery Low
  /ˌaɪ.səʊ.ˈθɜː.məʊ.bɑːθ/A line on a map or chart connecting points in a body of water having the same temperature at a given depth, or connecting points where the temperature is the same at the same depth.

Showing 3421–3440 of 3621 words.