micromillimetre
/ˌmaɪkroʊˈmɪlɪˌmitər/
noun
- A unit of length equal to one millionth of a meter; a micrometer (British spelling).
- Engineers use lasers to measure distances to the nearest micromillimetre.
- A single bacterium can be about one micromillimetre in diameter.
- The thickness of a spider's web is often less than a micromillimetre.
Synonyms