Welsh

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Welsh numbers (edit)
 ←  1,000  ←  1,000,000 (106) 1,000,000,000 (109)
    Cardinal: biliwn

Etymology

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Borrowed from English billion.

Pronunciation

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Numeral

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biliwn m or f (plural biliynau or biliwnau)

  1. (cardinal number) billion

Mutation

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Resists mutation to avoid confusion with forms of miliwn.

References

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  • R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke et al., editors (1950–present), “biliwn”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies