IV

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

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

IV

1. A Roman numeral representing four (4).

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

(Roman numeral):

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

• IPA^(key): /ˌaɪ ˈviː/

IV (not comparable)

1. (medicine) Abbreviation of intravenous.

   Alternative form: i.v.

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

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

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

IV

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

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

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

IV

1. abbreviation of Iupiter (“Jupiter”)

IV

1. 4