Microorganismnoun
(microbiology) An organism that is too small to be seen by the unaided eye, especially a single-celled organism, such as a bacterium.
Microorganismnoun
Any microscopic form of life; a form of life too small to be seen by the naked eye; - particularly applied to bacteria, protozoa, yeasts, and similar organisms, esp. such are supposed to cause infectious diseases.
Microorganismnoun
any organism of microscopic size
Microorganism
A microorganism, or microbe, is a microscopic organism, which may exist in its single-celled form or a colony of cells. The possible existence of unseen microbial life was suspected from ancient times, such as in Jain scriptures from sixth century BC India.
Microbenoun
(microbiology) Any microorganism, but especially a harmful bacterium.
Microbenoun
A microscopic organism; a microorganism; - particularly applied to bacteria and especially to pathogenic forms; as, the microbe of fowl cholera.
Microbenoun
a minute life form (especially a disease-causing bacterium); the term is not in technical use