NCIt definition : A species of facultatively anaerobic, gram negative, rod shaped bacteria assigned
to the phylum Proteobacteria; this species is motile by peritrichous flagella, it
is negative for ornithine decarboxylase activity, and it is positive for growth on
malonate.;
Alternative definition : CDISC: Any bacterial organism that can be assigned to the species Citrobacter werkmanii.;