Definition of Chlamydia

1. Noun. A sexually transmitted infection caused by bacteria of the genus Chlamydia.

2. Noun. Coccoid rickettsia infesting birds and mammals; cause infections of eyes and lungs and genitourinary tract.
Generic synonyms: Eubacteria, Eubacterium, True Bacteria
Group relationships: Genus Chlamydia
Specialized synonyms: C. Psittaci, Chlamydia Psittaci, C. Trachomatis, Chlamydia Trachomatis
Derivative terms: Chlamydial

Definition of Chlamydia

1. Noun. Any of several common, often asymptomatic, sexually transmitted diseases caused by the microorganism ''Chlamydia trachomatis''. ¹

2. Noun. (countable zoology) Any of various coccoid microorganisms of the genus ''Chlamydia'' that are pathogenic to humans and other animals. ¹

¹ Source:

Definition of Chlamydia


Medical Definition of Chlamydia

1. Genus of minute prokaryotes that replicate in cytoplasmic vacuoles within susceptible eukaryotic cells. Genome about one third that of E. Coli, Chlamydia trachomatis causes trachoma in man, Chlamydia psittaci causes economically important diseases of poultry. Infection caused by Chlamydia trachomatis are the most common bacterial sexually transmitted infection, with an calculated annual incidence of 4.5 million cases in the USA. Chlamydia can cause a spectrum of infections including urethritis, epididymitis and proctitis in men, cervicitis, salpingitis and acute urethral syndrome in women and conjunctivitis and pneumonia in newborn infants. (05 Jan 1998)

Lexicographical Neighbors of Chlamydia

chk1 protein kinase
chlamydia infections
chlamydia pneumonia
chlamydia pneumoniae
chlamydia psittaci
chlamydiaceae infections
chlamydial arthritis

Literary usage of Chlamydia

Below you will find example usage of this term as found in modern and/or classical literature:

1. Healthy People 2000: National Health Promotion & Disease Prevention by DIANE Publishing Company (2004)
"... the list now encompasses chlamydia trachomatis infections, genital herpes, human papillomavirus, chancroid, genital mycoplasmas, cytomegalovirus, ..."

2. Screening for Infectious Diseases Among Substance Abusers: A Treatment by DIANE Publishing Company (1994)
"Screening Clinical/Medical Presentations The early symptoms of chlamydia are often ... Because of this, chlamydia is easily spread among sexual partners. ..."

3. Guide To Clinical Preventive Services by U. S. Preventive Services Task Force (1989)
"1981: 215-64. 2. Centers for Disease Control. chlamydia ... Cost-effectiveness of serology and cell culture for chlamydia ..."

4. Healthy People 2000 Review, 1998-99: National Health Promotion & Disease edited by Diane Wagener, Richard J. Klein (1999)
"chlamydia Trachomatis Status: moving toward target A clear downward trend is evident in the prevalence of chlamydia trachomatis among women 15-24 years. ..."

5. Clinician's Handbook of Preventive Services: Put Prevention Into Practice by DIANE Publishing Company (1995)
"Before a specimen for a chlamydia test is taken, all secretions and discharge ... Specimens for chlamydia tests should be taken after any specimens for Gram ..."

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