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  1. INDEX Definition & Meaning - Merriam-Webster

    The meaning of INDEX is a list (as of bibliographical information or citations to a body of literature) arranged usually in alphabetical order of some specified datum (such as author, subject, or …

  2. INDEX Synonyms: 30 Similar and Opposite Words - Merriam …

    Synonyms for INDEX: indicator, needle, gauge, hand, pointer, gage, dial, face; Antonyms of INDEX: delete

  3. INDICES Definition & Meaning - Merriam-Webster

    2 days ago · The meaning of INDICES is plural of index.

  4. Examples of 'INDEX' in a Sentence | Merriam-Webster

    Apr 10, 2024 · The index has jumped twenty-nine per cent in the past two months, which is the biggest such increase in more than thirty years. — John Cassidy, The New Yorker, 22 Jan. 2024

  5. HEAT INDEX Definition & Meaning - Merriam-Webster

    The heat index is defined as a function of temperature and relative humidity. The combination of the two results in an apparent temperature that gives an idea of what the hot and humid air …

  6. Quordle - Merriam-Webster

    Put your skills to the test and solve four words at once! You have 9 guesses to solve all four words. A new Quordle available each day to solve.

  7. INDEX CASE Definition & Meaning - Merriam-Webster

    The meaning of INDEX CASE is the first documented case of an infectious disease or genetically transmitted condition or mutation in a population, region, or family.

  8. INDEX NUMBER Definition & Meaning - Merriam-Webster

    The meaning of INDEX NUMBER is a number used to indicate change in magnitude (as of cost or price) as compared with the magnitude at some specified time usually taken as 100.

  9. GLYCEMIC INDEX Definition & Meaning - Merriam-Webster

    Oct 14, 2025 · The meaning of GLYCEMIC INDEX is a measure of the rate at which ingested food causes the level of glucose in the blood to rise; also : a ranking of foods according to the …

  10. REFRACTIVE INDEX Definition & Meaning - Merriam-Webster

    May 22, 2025 · The meaning of REFRACTIVE INDEX is the ratio of the speed of radiation (such as light) in one medium (such as air, glass, or a vacuum) to that in another medium.