| arboricole | <ornithology> Tree-inhabiting; said of certain birds. Origin: L. Arbor + colere to inhabit. Source: Websters Dictionary (01 Mar 1998) |
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| arboriculture | The cultivation of trees and shrubs, chiefly for timber or for ornamental purposes. Origin: L. Arbor tree + cultura. See Culture. Source: Websters Dictionary (01 Mar 1998) |
| arboriculturist | One who cultivates trees. Source: Websters Dictionary (01 Mar 1998) |
| arborise | To spread in a treelike branching pattern. (05 Mar 2000) |
| arborist | One who makes trees his study, or who is versed in the knowledge of trees. Origin: F. Arboriste, fr. L. Arbor tree. Source: Websters Dictionary (01 Mar 1998) |
| arborization | The appearance or figure of a tree or plant, as in minerals or fossils; a dendrite. Origin: Cf. F. Arborisation, fr. L. Arbor tree. Source: Websters Dictionary (01 Mar 1998) |
| 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) |
| 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) |