chlamydomonas reinhardtii |
An organism considered both a protozoon and an alga (bold & wynne, introduction to the algae, 2d ed, p84). Delicate, hairlike appendages arise from the flagellar surface in these organisms. (12 Dec 1998) |
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Chlamydophrys |
A genus of shelled amoebas, commonly found as faecal protozoans. Origin: G. Chlamys, cloak, + ophrys, brow (05 Mar 2000) |
Chlamydozoon |
<protozoa> 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) |
chloasma |
<dermatology> Melasma cholasma hepaticum a term formerly used to refer to circumscribed facial hyperpigmentation resembling melasma that may occur as a cutaneous manifestation of chronic liver disease. Origin: Gr. Chloazein = to be green (18 Nov 1997) |
chloasma bronzinum |
A bronze-coloured pigmentation, probably produced by hormone imbalance, occurring in gradually increasing areas on the face, neck, and chest in persons exposed continuously to the tropical sun; similar to chloasma of the temperate zone, but intensified because of strong sunlight. Synonym: tropical mask. (05 Mar 2000) |
chlophedianol hydrochloride |
2-Chloro-alpha-(2-dimethylaminoethyl)benzhydrol hydrochloride;an antitussive agent related chemically to the antihistamines. (05 Mar 2000) |
chlor- |
Chloro- 1. Combining form denoting green. 2. Combining form denoting association with chlorine. Origin: G. Chloros, green (05 Mar 2000) |
chloracetic acid |
An acetic acid in which one or more of the hydrogen atoms are replaced by chlorine. According to the number of atoms so displaced the acid is called monochloroacetic (chloroacetic; ClCH2COOH), dichloroacetic (Cl2CHCOOH), or trichloroacetic (Cl3CCOOH). Synonym: chloracetic acid. (05 Mar 2000) |
chloracne |
An occupational acne-like eruption due to prolonged contact with certain chlorinated compounds (naphthalenes and diphenyls); keratinous plugs (comedones) form in the pilosebaceous orifices, and variously sized small papules (2 to 4 mm) develop. Synonym: chlorine acne, tar acne. (05 Mar 2000) |
chloraemia |
Synonym: chlorosis. Synonym: hyperchloraemia. (05 Mar 2000) |
chloragosome |
<cell biology> Cytoplasmic granule of unknown function found in the coelomocytes of annelids. Origin: Gr. Soma = body (05 Jan 1998) |
chloral |
CCl3-CHO; trichloroacetaldehyde;a thin oily liquid with a pungent odour, formed by the action of chlorine gas on alcohol. Synonym: anhydrous chloral. (05 Mar 2000) |
chloral alcoholate |
A complex of chloral and ethanol. Prepared by refluxing trichloroacetaldehyde (chloral) or chloral hydrate with alcohol. Alleged to be an active constituent of a "Mickey Finn." (05 Mar 2000) |
chloral betaine |
The adduct formed by chloral hydrate and betaine; it is slowly hydrolyzed in the alimentary tract to chloral hydrate; used as a hypnotic and sedative. (05 Mar 2000) |
chloral hydrate |
<chemical> A hypnotic and sedative used in the treatment of insomnia. The safety margin is too narrow for chloral hydrate to be used as a general anaesthetic in humans, but it is commonly used for that purpose in animal experiments. It is no longer considered useful as an anti-anxiety medication. Pharmacological action: sedatives, nonbarbiturate, anaesthetics, intravenous. Chemical name: 1,1-Ethanediol, 2,2,2-trichloro- (12 Dec 1998) |