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Billionth has 2 synonyms. The top synonyms for billionth are one-billionth, ordinal. Another word for billionth is one-billionth. Browse the full list below.
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| Random | DefinitionA common synonym for billionth is one-billionth. Other synonyms include ordinal.
Billionth has 2 synonyms listed on Thesaurasize.
°The ordinal form of the number one billion.
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