‘’noun, plural: fastidious organisms‘’
An organism that has complex nutritional requirements.
The term is a commonly used in microbiology in which it describes an organism that grows only in a specially fortified artificial culture media under specific culture conditions.
Example of an extremely fastidious organism is Leuconostoc mesenteroides, a facultative anaerobe requiring complex growth factors and amino acids.
Word origin: French fastidieux, Latin fastidiosus, from fastidium (“loathing”).
See also: culture medium