microorganism
noun
- microscopic living entity
Wiktionary
Pronunciation: /ˌmaɪ.kɹəʊˈɔː.ɡəˌnɪz.m̩/ / /ˌmaɪ.kɹoʊˈɔɹ.ɡəˌnɪz.m̩/
noun
Etymology: Etymology tree Proto-Indo-European *mey-der.? Ancient Greek μικρός (mikrós)der. English micro- English organism English microorganism From micro- + organism.
- An organism that is too small to be seen by the unaided eye; especially, a single-celled organism, such as a bacterium.
“The cud is then reswallowed by the ruminant and further digested by specialized microorganisms that live in the rumen.”
“Bacillus anthracis: from the first up to the sixth day, this microorganism was isolatable, or in other words still alive.”