billion

num. 十億、十億個

學術名詞

• 十億：計量學、電機工程、數學、核能、資訊、電力工程
• 萬億：計量學、數學、電力工程
• 兆：數學

英文釋義

1. the number that is represented as a one followed by 12 zeros; in the United Kingdom the usage followed in the United States is frequently seen
2. a very large indefinite number (usually hyperbole)
3. the number that is represented as a one followed by 9 zeros
4. denoting a quantity consisting of one thousand million items or units in the United States