| arborization block | Intraventricular block supposedly due to widespread blockage in the Purkinje ramifications and manifested in the electrocardiogram by a pattern similar to bundle-branch block but with complexes of low amplitude. (05 Mar 2000) |
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| arborized | Having a treelike appearance. "An arborized or moss agate." Source: Websters Dictionary (01 Mar 1998) |
| arboroid | Denoting a colony of protozoa, each of which remains attached to another cell or to the main stem at one point, forming a branching or dendritic figure. Origin: L. Arbor, tree, + G. Eidos, resemblance (05 Mar 2000) |
| arborous | Formed by trees. "From under shady, arborous roof." (Milton) Source: Websters Dictionary (01 Mar 1998) |
| arborvirus | Although arbor sounds as if it should have something to do with trees, it doesn't. It comes from the first 2 letters of arthropod + the first 3 letters of borne. Arborviruses are transmitted (borne) to humans by mosquitoes and ticks (arthropods). (12 Dec 1998) |
| arbovirus | <epidemiology> A virus which uses Arthropods as vectors and is transmitted in their saliva to the definitive host. For example, yellow fever. Origin: from Arthropod borne virus (05 Dec 1998) |
| arbovirus infection | <virology> A type of viral infection that is transmitted by mosquitoes in late spring to early autumn. One manifestation is encephalitis (central nervous system infection). (27 Sep 1997) |
| arbovirus infections | Infections caused by arthropod-borne viruses, general or unspecified. (12 Dec 1998) |
| arboviruses | <virology> Diverse group of single stranded RNA viruses that have an envelope surrounding the capsid. Arthropod borne, hence the name and multiply in both invertebrate and vertebrate host, causing for example yellow fever and encephalitis. The group is very heterogeneous and three major families are recognised: Togaviridae, Bunyaviridae and Arenaviridae. (18 Nov 1997) |
| arbuscle | A dwarf tree, one in size between a shrub and a tree; a treelike shrub. Origin: L. Arbuscula small tree, shrub, dim. Of arbor tree. Source: Websters Dictionary (01 Mar 1998) |
| arbuscular | Of or pertaining to a dwarf tree; shrublike. Source: Websters Dictionary (01 Mar 1998) |
| arbustive | Containing copses of trees or shrubs; covered with shrubs. Origin: L. Arbustivus, fr. Arbustum place where trees are planted. Source: Websters Dictionary (01 Mar 1998) |
| arbute | The strawberry tree, a genus of evergreen shrubs, of the Heath family. It has a berry externally resembling the strawberry; the arbute tree. <botany> Trailing arbutus, a creeping or trailing plant of the Heath family (Epigaea repens), having white or usually rose-coloured flowers with a delicate fragrance, growing in small axillary clusters, and appearing early in the spring; in new England known as mayflower. Synonym: ground laurel. Origin: L. Arbutus, akin to arbor tree. Source: Websters Dictionary (01 Mar 1998) |
| arbutin | <protein> A glycoside found in the bearberry and related plants which has been used to treat urinary-tract diseases. (09 Oct 1997) |
| ARC | A stage before AIDS, with symptoms such as swollen lymph glands, long-lasting night sweats, fevers and unusual weight loss. Also commonly called symptomatic HIV infection. This term is no longer officially recognised by the CDC. (09 Oct 1997) |