milliardth

Adjective

archaic not-comparable

(now rare) The ordinal form of the number one milliard.

Japanese Meaning

（現代では稀な用法）「milliard」（十億）の序数形、すなわち十億番目を表す数詞の形

The mathematician celebrated the milliardth prime he had discovered.

その数学者は、自分が発見した十億番目の素数を祝った。

Sense（1）

(now rare) The ordinal form of the number one milliard.