0

• 0̸ (slashed zero, available only as a combination of two code points)

Tenth century “West Arabic” variation of the Nepali form of Hindu-Arabic numeral ‫٠‎ (0)‬ (compare Devanāgarī script ०), adopted for use with the Latin script in Europe.

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1. (Arabic digits) The cardinal number zero indicating absence of any quantity.
2. A digit in decimal, binary, and every other base numbering system.

   15 × 134 = 2010

   0000 0001₂

   0x1000E001 (hexadecimal notation)

3. (mathematics) The identity element with respect to addition.

   ${\displaystyle \exists \,\mathbf {0}$ :\forall a\in A:\mathbf {0} +a=a+\mathbf {0} =a}

4. (mathematics, computer science) A Boolean or truth value corresponding to false.

   f : B^k → B : B = {0, 1}

   A&B&C=0 → A=0 || B=0 || C=0

5. (computing) Indicates that the number that follows is in octal.

The following forms are equivalent as a decimal digit:

The additional following forms are equivalent as a cardinal number:

• Styles
• 
  A vintage clock with numbers 0–11.
• 
  The digit ‘0’ in a digital seven segment display.

• (Arabic digits): 0 1 2 3 4 5 6 7 8 9

Other representations of 0:

• (number, digit, “zero”):
  • (General Australian, US) enPR: zē'rō, IPA^(key): /ˈziːɹəʊ/
  • (Received Pronunciation) IPA^(key): /ˈzɪəɹəʊ/

  • Audio (US)

    (file)

  • Rhymes: -ɪəɹəʊ
• (digit, “nought”):
  • (Received Pronunciation) IPA^(key): /nɔːt/
  • Rhymes: -ɔːt
• (digit, “oh”):
  • (Received Pronunciation) IPA^(key): /əʊ/
  • Rhymes: -əʊ

  The pronunciation as a digit is very often shortened to that of the letter O to save time or keep rhythm. This change is required for the tens place of minutes following the hour and in shortened pronunciation of numbers between 10 and 19 hundred, including years, as well as their truncated two-digit forms, where the zero is a leading digit. It is also very common when saying telephone numbers, decimals after the decimal point, the leading zero in decimal fractions less than one, or many other words such as 007 double o seven.

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1. 0.
2. The origin, starting point, or fixed reference point, especially for a measurement.

   The 0 for the Celsius scale is 273.15 Kelvin.

3. (electrical engineering) The off or low bit state.

   If the NOT gate input is 1, the output is 0.

• 0th, the ordinal number form

• 0 (number) in Wikipedia
• 1
• 2

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1. (gay slang) bottom

• 0.5 (língdiǎnwǔ)
• 1 (yī)