biliwn
Welsh
Etymology
Borrowed from English billion.
Numeral
biliwn m or f (plural biliynau or biliwnau)
- billion
Mutation
Does not mutate.
References
- Angharad Fychan and Ann Parry Owen, editors (2014), “biliwn”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies