IV

See also: Appendix:Variations of "iv"

Ⅳ U+2163, Ⅳ ROMAN NUMERAL FOUR ← Ⅲ [U+2162] Number Forms Ⅴ → [U+2164]

Translingual

Alternative forms

• iv
• IIII, iiii (nonstandard, clock face)
• IIIJ, iiij (nonstandard)
• IV. (ordinal number)

Etymology

Written in subtractive notation, indicating that I (“1”) is subtracted from V (“5”); 1 minus 5 is 4. Compare IX, XL and XC.

Numeral

IV

1. A Roman numeral representing four (4).

Symbol

IV

1. Used to indicate an ordinal number; the fourth (common as a name suffix)
3. April.

   Comeronyms: I, i, 1; II, ii, 2; III, iii, 3; V, v, 5; VI, vi, 6; VII, vii, 7; VIII, viii, 8; IX, ix, 9; X, x, 10; XI, xi, 11; XII, xii, 12

4. (inorganic chemistry) Specifying an oxidation state of 4
5. (music) major subdominant triad

See also

(Roman numeral):

• Previous: III – three (3)
• Next: V – five (5)

English

Pronunciation

• IPA^(key): /ˌaɪ ˈviː/

Adjective

IV (not comparable)

1. (medicine) Abbreviation of intravenous.

   Alternative form: i.v.

Noun

IV (countable and uncountable, 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.
5. (chemistry) Initialism of iodine value

Anagrams

• -vi-, V. I., V.I., VI, Vi, v.i., vi, vi.

Japanese

Etymology

initialism of イメージビデオ From English image+video

Noun

IV

1. abbreviation of イメージビデオ (“imējibideo”)

Related terms

• ビデオ
• びでお
• イメージ
• imēji (imēji)
• bideo (bideo)

Descendants

• → English: IV
  • English: idol video
  • English: image video

See also

• イメージビデオ on the Japanese Wikipedia.Wikipedia ^ja

Latin

Etymology 1

Proper noun

IV

1. abbreviation of Iupiter (“Jupiter”)

Etymology 2

Numeral

IV

1. 4