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a genus of gram-negative, facultatively anaerobic, motile bacteria, many species of which are opportunistic pathogens, causing infections of the endocardium, blood, wounds, and urinary and respiratory tracts. S. marces´cens is the most frequently isolated species.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.


A genus of motile, peritrichous, aerobic to facultatively anaerobic bacteria (family Enterobacteriaceae) that contains small, gram-negative rods. Some strains are encapsulated. Many strains produce a pink, red, or magenta pigment; their metabolism is fermentative and they are saprophytic on decaying plant and animal materials. The type species is Serratia marcescens.
[Serafino Serrati, 18th-century Italian physicist]
Farlex Partner Medical Dictionary © Farlex 2012


(sĕ-rā′shē-ə, -shə)
n. pl. serratia
Any of various red, rod-shaped bacteria of the genus Serratia, especially S. marcescens, that are found in the intestinal tract, are resistant to many antibiotics, and cause nosocomial and opportunistic infections such as wound infections and pneumonia as well as disease in coral reefs.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.


Serafino, 18th century Italian physicist.
Serratia - a genus of anaerobic bacteria that contain gram-negative rods.
Serratia marcescens - a species found in water, soil, milk, foods, and insects; significant cause of hospital-acquired infection.
Medical Eponyms © Farlex 2012


A genus of motile, peritrichous, aerobic to facultatively anaerobic bacteria that cause infection in humans.
[Serafino Serrati, 18th-century Italian physicist]
Medical Dictionary for the Dental Professions © Farlex 2012
References in periodicals archive ?
Serratia marcescens outbreak associated with extrinsic contamination of 1% chlorxylenol soap.
cereus SSR1 9 [+ o -] 4 84 [+ o -] 7 80 [+ o -] 5 Serratia sp.
A group of outer membrane protein (OMP) genes has been documented in the Enterobacteriaceae species including Escherichia coli, Shigellaflexneri, Salmonella typhimurium, Klebsiella pneumoniae, Serratia marcescens, Proteus vulgaris, Proteus mirabilis, and Providencia stuartii.
Frequencia de Serratia sp em Infeccoes Urinarias de pacientes internados na Santa Casa de Misericordia em Fortaleza.
Also, there was one case report for a 3-month-old patient with metacarpal osteomyelitis due to Serratia marcescens, and another newborn patient with osteomyelitis; however, both of these cases presented with osteomyelitis without arthritis (18).
The epidemic began in early July 2016 in a premature 33.9 GA admitted for hyaline membrane disease, which showed after 3 days of his hospitalization signs of sepsis with isolation of Serratia marcescens in the blood culture, and other cases were diagnosed throughout the July period.
Bacteria from Serratia genus, Enterobacteriaceae family, are characterized as Gram-negative, facultative anaerobic and chemotrophic bacilli (Hejazi & Falkiner, 1997; Carvalho et al., 2010).