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