. 0とは 意味・読み方・使い方

発音

• (number, digit, “zero”):
  • (General Australian, 米国発音) enPR: zē′rō, IPA: /ˈziːɹəʊ/
  • (Received Pronunciation) IPA: /ˈzɪəɹəʊ/
  • 韻: -ɪəɹəʊ
• (digit, “nought”):
  • (Received Pronunciation) IPA: /ˈnɔːt/
  • 韻: -ɔːt

  When zero is a subscript, it is often read as nought, even in American English, so that for example x₀ is pronounced x nought.

• (digit, “oh” o):
  • (Received Pronunciation) IPA: /ˈəʊ/
  • 韻: -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.