汉：来源于希腊语，意为“small”，一般用于科技术语。前缀micro- 与词根micro “外形”长的一样，意思也一样。与其意思相近的词根是mini (minimum, minority,minus,minor,minimize,miniature,minute,mince,minion,minister,minibus,miniskirt,comminution)，异形同义前缀：minut-，parvi-，pusill-，baco-pauro- 其中，前三者来源于拉丁语，且前者来源于拉丁语 minutus 小，为它相应的拉丁语前缀，如：minute 微小、minor 较小的，次要，而后两者都来源于希腊语，且不常用。反义前缀：macro- 大。

英：word-forming element meaning "small, microscopic; magnifying; one millionth," from Latinized comb. form of Gk. mikros "small, little, petty, trivial, slight" (see mica).

1.microbe
n.tiny living creature that can be seen only with the help of a microscope,especially kinds of bacteria causing diseases and termentation细菌，微生物 *micro(=small),be<bio(=life)
例句：I peered into the microscope to get my first glimpse at living microbes.我第一次通过显微镜观察活着的细菌。

2.microcosm
n.something considered as representing mankind or the universe,on a small scale 微观世界观*micro(=small),cosm(=universe)
Each city is a microcosm of human society.每座城市都是人类社会的一个缩影。

3.micrometer
n. device for measuring very small objects 测微计 *micro(=small),meter(=measure)
例句：You'll need a micrometer to measure and set the gap between the electrodes.要测量或设置好两个电极之间的间距需要专门的测微计。

4.microorganism
n. organism so small sa to be visible only under a microscope 微生物 *micro(=small),organ(=instrument)
例句：Microorganisms are the basic building blocks of all life.微生物是所有生命的最基本的构成成分。

5.microlitre [micro- 微，小 + litre 升 →]
n. 微公升

6.microsecond [micro - 小,微 + second 秒 →]
n. 微秒

7.microampere [micro- 微，小 + ampere 安培；安（电里面的物理单位）]
n. 微安

8. microphone [micro- 微，小 + phon 声音 + -e 后缀 →“用来传播声音的很小的东西”→]
n.麦克风

9.microscope [micro- 微 + scop 看，观察 + -e 后缀→“能够看很小东西的东西”→]
n. 显微镜

10.microtome → 切片机 [micro- 微, 小 + tom 切，割 +　－e后缀 →“能把物体切成一小片一小片的机器”→]