单词 | billion |
释义 | Word Frequency billion(ˈbɪljən) nounWord forms: plural -lions or -lion 1. one thousand million: it is written as 1 000 000 000 or 109 2. (formerly, in Britain) one million million: it is written as 1 000 000 000 000 or 1012 3. (often plural) any exceptionally large number determiner 4. (preceded by a or a cardinal number) a. amounting to a billion it seems like a billion years ago b. (as pronoun) we have a billion here Derived forms billionth (ˈbillionth) adjective, noun Word origin C17: from French, from bi-1 + -llion as in million |
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