What is a synonym for "milliard"?

Common synonyms include: billion, large number, long scale unit, one thousand million.

Milliard

/ˈmɪliɑɹd/ num

num ·Rare ·Advanced level

Noun

Numeral

1
10⁹, a thousand (times a) million. (Now generally replaced by the short scale billion.) archaic
"For the coming year France would contribute 80 milliard francs ($200 million) to the Algerian budget [...]."

"One milliard adults are illiterate."

From French milliard.