Arwel Parry wrote:
I agree. "Thousand million" is absolutely unambiguous. I would say that "milliard" has not been used in the UK for at least the last 30-40 years, and would not be understood by most readers.
"Thousand million" sounds a bit odd though. If I saw "thousand million", I would expect to see a footnote explaining why this odd choice of wording was used instead of "billion", or perhaps a wikilink to [[thousand million]] explaining the various terms used for that quantity.
-Mark