It comes from the Greek word "mikros," meaning "small."
Here are some examples of words with the root "micro":
* Microscope: An instrument used to view tiny objects.
* Microcosm: A small system that is representative of a larger system.
* Micron: A unit of measurement equal to one millionth of a meter.
* Microbiology: The study of microorganisms.
* Microprocessor: A small computer chip that processes information.