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more about billionth
billionth |
1 definition found From WordNet r 1.6 [wn]: billionth adj : the ordinal number of one billion in counting order n 1: (in the U.S.) position 1,000,000,000 in a countable series of things 2: one part in a billion [syn: {one-billionth}]
more about billionth
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