English Words Starting With I

• isohyet

  nounC2
  /ˈaɪ.səʊ.haɪ.ɪt/A line on a map connecting points that receive equal rainfall over a specified period.
• isoionic point

  nounC2
  /ˌaɪsəʊaɪˈɒnɪk pɔɪnt/The specific pH at which a molecule, especially a protein or amino acid, carries an equal number of positive and negative charges, resulting in a net charge of zero for that specific molecular species in its pure, salt-free form.
• isokinetic exercise

  nounC2
  /ˌaɪ.səʊ.kɪˈnet.ɪk ˈek.sə.saɪz/A type of strength training exercise in which the muscle contracts at a constant speed against variable resistance provided by a specialized machine.
• isolate

  adjectivenounverbverb-transitiveB2
  /ˈaɪ.sə.leɪt/To separate something or someone from others; to keep apart.
• isolated camera

  nounC1
  /ˈaɪ.sə.leɪ.tɪd ˈkæm.rə/A single camera that is not part of a larger, integrated system or network; a standalone camera unit.
• isolated pawn

  nounC2
  /ˈaɪ.sə.leɪ.tɪd pɔːn/In chess, a pawn that has no pawns of the same colour on adjacent files, making it weak and difficult to defend.
• isolated point

  nounC2
  /ˈaɪ.sə.leɪ.tɪd pɔɪnt/A point in a topological space that has a neighbourhood containing no other points of the set.
• isolated set

  nounLow
  /ˈaɪ.sə.leɪ.tɪd sɛt/A set of points in mathematics that are separated from all other points in the space, meaning each point in the set has a neighbourhood containing no other points of the set.
• isolation

  nounC1
  /ˌaɪ.səˈleɪ.ʃən/The state of being separated from other people, groups, or things, either physically or socially.
• isolation booth

  nounC1
  /ˌaɪ.səˈleɪ.ʃən ˌbuːθ/A small, enclosed, soundproof space designed to physically separate a person from their surroundings.
• isolationism

  nounLow frequency
  /ˌaɪ.səlˈeɪ.ʃən.ɪ.zəm/A national policy or doctrine of avoiding political, economic, or military alliances and involvement with other countries.
• isolationist

  adjectivenounC1
  /ˌaɪ.səˈleɪ.ʃən.ɪst/A person or policy advocating that one's country should not form close political, military, or economic alliances with other countries.
• isolato

  nounLow
  /ˌaɪ.səˈleɪ.təʊ/A person who is physically or socially isolated; someone detached from a group or community.
• isolda

  nounVery rare (almost exclusively a proper name, rarely encountered outside of specific cultural/historical contexts).
  /ɪˈzɒl.də/A proper noun, primarily a given name of Germanic origin meaning 'ice battle' or 'ice ruler'.
• isolde

  nounVery Low
  /ɪˈzɒldə/A female given name of Germanic origin, famously associated with the tragic heroine of the medieval legend of Tristan and Isolde.
• isoleucine

  nounC2
  /ˌaɪ.səʊˈluː.siːn/An essential amino acid (C6H13NO2) required for protein synthesis in the body.
• isolex

  nounC2 (Very Low Frequency)
  /ˈaɪsə(ʊ)lɛks/A word found in only one dialect or one region, or a word unique to a specific language within a language family.
• isoline

  nounC2
  /ˈʌɪsə(ʊ)lʌɪn/A line on a map, chart, or diagram connecting points of equal value of a given quantity.
• isologue

  nounVery Low (Technical/Specialist)
  /ˈaɪsəlɒɡ/A chemical compound that is structurally similar to another, differing only by the replacement of an atom or group with another of similar valency or properties.
• isomagnetic

  adjectivenounVery Low
  /ˌaɪ.səʊ.mæɡˈnet.ɪk/Relating to or connecting points on the Earth's surface that have equal magnetic intensity or the same magnetic declination.

Showing 3361–3380 of 3621 words.