English Words Starting With I

• index finger

  nounB1
  /ˈɪn.deks ˌfɪŋ.ɡər/The finger next to the thumb; the first finger.
• index fossil

  nounLow
  /ˈɪndɛks ˈfɒs(ə)l/A fossil of a species known to have lived during a specific, relatively short geologic time span, used to identify and date the rock layer in which it is found.
• index fund

  nounB2
  /ˈɪndɛks fʌnd/A type of mutual fund or exchange-traded fund (ETF) that holds a collection of investments designed to match the composition and performance of a specific financial market index, such as the S&P 500.
• index futures

  plural-nounC2
  /ˈɪn.deks ˈfjuː.tʃəz/A type of standardized financial derivative contract to buy or sell a stock market index at a predetermined price on a specified future date.
• index librorum prohibitorum

  nounC1/C2 (Very Low Frequency)
  /ˌɪn.deks lɪˌbrɔː.rəm prəʊˌhɪb.ɪˈtɔː.rəm/An official list of books prohibited by the Catholic Church as heretical or immoral, publication of which was forbidden for members.
• index number

  nounB2
  /ˈɪndɛks ˈnʌmbə/A unique sequential identifier assigned to an item, document, or record for organization and retrieval, often used in lists, files, or series.
• index of industrial production

  nounLow in general language; high in economic and business contexts.
  /ˈɪndeks əv ɪnˈdʌstriəl prəˈdʌkʃən/A statistical measure of the output of the industrial sector of an economy, including manufacturing, mining, and utilities.
• index of refraction

  nounC1/C2
  /ˈɪndɛks əv rɪˈfrækʃ(ə)n/A number that describes how much light bends when it passes from one medium into another.
• index patient

  nounC2
  /ˈɪn.deks ˌpeɪ.ʃənt/The first identified individual with a particular disease or infection, serving as the initial case that leads to the identification of an outbreak or cluster.
• index plate

  nounLow/Very Low
  /ˈɪndɛks pleɪt/A flat, circular plate with a sequence of holes or notches, used in mechanical indexing or positioning systems.
• index set

  nounSpecialized
  /ˈɪndɛks sɛt/A set whose elements are used as indices or labels to reference elements in another collection, commonly in mathematics, computer science, or data organization.
• index-link

  verb-transitiveC1
  /ˈɪndeks ˈlɪŋkt/adjusted automatically according to changes in an index of prices, typically to protect against inflation.
• indexation

  nounC1
  /ˌɪn.dekˈseɪ.ʃən/The process of linking the value of something (like wages, taxes, or prices) to changes in a specified index, such as the rate of inflation.
• indexical

  adjectivenounC1
  /ɪnˈdɛksɪk(ə)l/relating to, serving as, or containing an index; pointing out or indicating something.
• indexing head

  nounC2/Technical
  /ˈɪndɛksɪŋ hɛd/A precision tool attachment for a milling machine or dividing head that allows for accurate and repeatable angular positioning of a workpiece, primarily for machining gear teeth, fluting, or other equally spaced features.
• indexing service

  nounC1
  /ˈɪndɛksɪŋ ˈsɜːvɪs/A business or system that organizes information into a searchable index, typically for documents, websites, or databases.
• india

  nounC1
  /ˈɪndɪə/A country in South Asia, the seventh-largest by area and the most populous democracy in the world.
• india chintz

  nounLow
  /ˌɪndɪə ˈtʃɪnts/A glazed cotton fabric, usually printed with large, brightly coloured floral or abstract patterns, originally produced in India.
• india ink

  nounLow
  /ˌɪndɪə ˈɪŋk/A deep black, opaque, waterproof ink originally from China and Japan.
• india pale ale

  nounMedium
  /ˌɪn.di.ə ˌpeɪl ˈeɪl/A type of pale ale beer, originally brewed in England with extra hops and higher alcohol content to survive long sea voyages to India.

Showing 1201–1220 of 3621 words.