English Words Starting With I

• isochronism

  nounC2/Highly Specialized
  /ʌɪˈsɒkrəˌnɪz(ə)m/The characteristic of occurring at equal intervals of time.
• isochronize

  verbverb-transitiveC2/Extremely Rare
  /ˈaɪ.səʊ.krə.naɪz/To make events or processes occur at equal time intervals; to synchronize to a common time standard.
• isochrony

  nounC2
  /aɪˈsɒk.rə.ni/The property of occurring at equal time intervals.
• isocitric acid

  nounVery Low
  /ˌaɪsəʊˌsɪtrɪk ˈæsɪd/A specific isomer of citric acid that is an intermediate compound in the tricarboxylic acid (Krebs) cycle, essential for cellular energy production.
• isoclinal

  adjectivenounVery Low
  /ˌaɪ.səʊˈklaɪ.nəl/Having the same inclination or dip.
• isocline

  nounVery Low
  /ˈaɪ.sə(ʊ).klaɪn/A line on a map or chart connecting points of equal slope, inclination, or dip.
• isoclinic line

  nounC1/C2 - Highly specialized technical term.
  /ˌaɪ.səʊˈklɪn.ɪk laɪn/A line on a map or chart connecting points of equal magnetic dip (the angle between the Earth's magnetic field and the horizontal plane).
• isocolon

  nounVery Rare
  /ˌaɪsə(ʊ)ˈkəʊlɒn/A rhetorical device consisting of a series of phrases or clauses of equal length and structure.
• isocracy

  nounVery Low (C2+)
  /aɪˈsɒkrəsi/A system of government in which all people have equal political power.
• isocrates

  nounVery Low
  /aɪˈsɒkrətiːz/A proper noun, the name of an ancient Athenian orator, rhetorician, and educator (436-338 BCE).
• isocyanate

  nounLow (C2/Proficiency)
  /ˌaɪ.səʊˈsaɪ.ə.neɪt/A chemical compound containing the -N=C=O group, typically used in the production of polyurethanes and other polymers.
• isocyanic acid

  nounVery Low (C2+)
  /ˌaɪ.səʊ.saɪˈæn.ɪk ˈæs.ɪd/A volatile, poisonous organic acid with the chemical formula HNCO.
• isocyanide

  nounVery Low
  /ˌaɪ.səʊˈsaɪ.ə.naɪd/A highly toxic organic compound containing the functional group -N⁺≡C⁻ (the isomer of a nitrile).
• isocyanine

  nounVery Rare
  /ˌaɪ.səʊˈsaɪ.ə.niːn/A synthetic cyanine dye containing nitrogen atoms in its molecular structure.
• isocyano group

  nounVery Low
  /ˌaɪ.sə(ʊ)ˈsaɪ.nəʊ ɡruːp/A functional group in organic chemistry with the structure -N⁺≡C⁻, where nitrogen is positively charged and carbon is negatively charged.
• isodef

  nounVery Low / Obscure
  /ˈaɪsəʊˌdɛf/A fabricated word (non-standard English) appearing in theoretical linguistics, data compression, or computational contexts as an example placeholder, hypothetical term, or within an illustrative algorithm.
• isodiaphere

  nounVery Low (Technical)
  /ˌaɪ.səʊˈdaɪ.ə.fɪə/A nuclide (type of atomic nucleus) having the same difference between the number of neutrons and protons as another nuclide.
• isodimorphism

  nounExtremely rare / Technical
  /ˌaɪsəʊdaɪˈmɔːfɪzəm/A phenomenon where two crystalline substances form mixed crystals because they have similar crystalline forms and molecular volumes.
• isodose

  adjectivenounLow
  /ˈaɪsə(ʊ)dəʊs/A line or surface connecting points of equal radiation dose.
• isodrosotherm

  nounVery Low
  /ˌaɪ.səʊˈdrɒs.ə.θɜːm/A line on a weather map connecting points of equal dew point temperature.

Showing 3321–3340 of 3621 words.