音标：['biljәnθ] ；

num. 第十亿个, 十亿分之一

n. position 1,000,000,000 in a countable series of things
s. the ordinal number of one billion in counting order

词型变化：名词复数形式 : billionths

词性分布：

名词100%

billionth的用法和样例：

例句

用作名词(n.)

One NM is one-1 billionth meter.一纳米是十亿分之一米。
Some seismometers are capable of detecting ground motion as small as 1 billionth of a meter,or about 40 billionth of an inch.一些地震检波器能探测相当于十亿分之一米或亿分之四英寸的地面运动。

【近义词】

morsel少量
particle颗粒
modicum少量
touch触摸
portion部分
fraction小部分
one-billionth十亿分之一

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