bil·lionth 
(bĭlyənth)
(bĭlyənth)n.
1. The ordinal number matching the number one billion in a series.
2. One of a billion equal parts.
billionth adj. & adv.
| 单词 | billionth |
| 释义 | bil·lionth (bĭlyənth)n. 1. The ordinal number matching the number one billion in a series. 2. One of a billion equal parts. billionth adj. & adv. |
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