| zeuglodont | <zoology> Any species of Zeuglodonta. Source: Websters Dictionary (01 Mar 1998) |
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| zeuglodonta | <zoology> Same as Phocodontia. Source: Websters Dictionary (01 Mar 1998) |
| zeugmatography | <investigation, radiology> A medical imaging process designed to distinguish normal tissue from tumour. It combines nuclear magnetic spectroscopy with techniques for scanning with radio waves to create images of cross-sections of the human body. (11 May 1997) |
| zeugobranchiata | <zoology> Same as Zygobranchia. Origin: NL, fr. Gr. To yoke + a gill. Source: Websters Dictionary (01 Mar 1998) |
| zeus | The chief deity of the Greeks, and ruler of the upper world (cf. Hades). He was identified with Jupiter. Source: Websters Dictionary (01 Mar 1998) |
| zeuzerian | <zoology> Any one of a group of bombycid moths of which the genus Zeuzera is the type. Some of these moths are of large size. The goat moth is an example. Source: Websters Dictionary (01 Mar 1998) |
| zeylanite | <chemical> See Ceylanite. Source: Websters Dictionary (01 Mar 1998) |
| zibeth | <zoology> A carnivorous mammal (Viverra zibetha) closely allied to the civet, from which it differs in having the spots on the body less distinct, the throat whiter, and the black rings on the tail more numerous. It inhabits India, Southern China, and the East Indies. It yields a perfume similar to that of the civet. It is often domesticated by the natives, and then serves the same purposes as the domestic cat. Called also Asiatic, or Indian, civet. Origin: Cf. It. Zibetto. See Civet. Source: Websters Dictionary (01 Mar 1998) |
| zidovudine | <drug> A nucleoside analogue used to slow replication of HIV AZT is approved for the initial treatment of HIV infection. AZT is increasingly administered in combination with other antiviral drugs, especially 3TC (a combination that is under consideration by the FDA as another initial treatment regimen for HIV) as well as ddC (an FDA-approved combination for persons with progressive disease and CD4 cell counts below 300). Possible side effects include bone marrow suppression leading to anaemia, leukopenia or neutropenia nausea, muscle weakness and headaches. (09 Oct 1997) |
| ziega | Curd produced from milk by adding acetic acid, after rennet has ceased to cause coagulation. Source: Websters Dictionary (01 Mar 1998) |
| Ziehen, Georg | <person> German psychiatrist, 1862-1950. See: Ziehen-Oppenheim disease. (05 Mar 2000) |
| Ziehen-Oppenheim disease | A genetic, environmental, or idiopathic disorder, usually beginning in childhood or adolescence, marked by muscular contractions that distort the spine, limbs, hips, and sometimes the cranial-innervated muscles. The abnormal movements are increased by excitement and, at least initially, abolished by sleep. The musculature is hypertonic when in action, hypotonic when at rest. Hereditary forms usually begin with involuntary posturing of the foot or hand (autosomal recessive form ) or of the neck or trunk (autosomal dominant form ); both forms may progress to produce contortions of the entire body. Synonym: progressive torsion spasm, torsion disease of childhood, torsion dystonia, Ziehen-Oppenheim disease. (05 Mar 2000) |
| Ziehl's stain | <technique> A carbol-fuchsin solution of phenol and basic fuchsin used to demonstrate bacteria and cell nuclei. (05 Mar 2000) |
| Ziehl, Franz | <person> German bacteriologist, 1857-1926. See: Ziehl's stain, Ziehl-Neelsen stain. (05 Mar 2000) |
| Ziehl-Neelsen stain | <technique> A method for staining acid-fast bacteria using Ziehl's stain, decolorizing in acid alcohol, and counterstaining with methylene blue; acid-fast organisms appear red, other tissue elements light blue; a modification of this stain is also used for Actinomycetes and Brucella. (05 Mar 2000) |