millionth

1. ORD The millionth item in a series is the one you count as number one million. 第一百万的

Last year the millionth truck rolled off the assembly line. 去年，第100万辆卡车驶下了装配线。

2. FRACTION A millionth of something is one of a million equal parts of it. 百万分之一的

The bomb must explode within less than a millionth of a second. 那枚炸弹必须在百万分之一秒内爆炸。