1.
microorganism, microbe
A living organism too small to be seen with the naked eye, including bacteria, viruses, fungi, and protozoa. Used in scientific, medical, and food-production contexts.
Usage
The word breaks down as 微 (minute) + 生物 (living thing). Used in both scientific and everyday contexts. Japanese fermentation culture (sake, miso, soy sauce, natto) relies heavily on 微生物, making this word common in food-related discussions as well as biology.