IV

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See also: iv, -iv, ív, and -ív

U+2163, Ⅳ
ROMAN NUMERAL FOUR

[U+2162]
Number Forms
[U+2164]

Translingual

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Alternative forms

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Etymology

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One (I) less than five (V)

Numeral

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IV

  1. A Roman numeral representing four (4).

Symbol

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IV

  1. Used to indicate an ordinal number; the fourth (common as a name suffix)
  2. (inorganic chemistry) Specifying an oxidation state of 4
  3. (music) major subdominant triad

English

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Pronunciation

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Adjective

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IV (not comparable)

  1. (medicine) Abbreviation of intravenous.
    Alternative form: i.v.

Noun

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IV (plural IVs)

  1. (medicine) Initialism of intravenous injection.
  2. (cryptography) Initialism of initialization vector.
  3. (statistics) Initialism of instrumental variable.
  4. Initialism of immigrant visa.

Anagrams

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Latin

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Etymology 1

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Proper noun

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IV

  1. Abbreviation of Iupiter (Jupiter).

Etymology 2

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Numeral

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IV

  1. 4