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Dictionary Suite
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arboretum a place where trees are grown for scientific study and display.
arborist a person with specialized knowledge of trees and experience in their care.
arborvitae any of various evergreens having small cones and leaves of closely overlapping scales, often grown as an ornamental shrub or tree.
arbor vitae the treelike structure of the white matter in the cerebellum when viewed in longitudinal cross section.
arbour a spelling of "arbor" used in Canada and Britain. See "arbor" for more information.
arbovirus any of a number of viruses that are transmitted by certain blood-sucking arthropods such as mosquitoes and ticks and that may cause encephalitis, yellow fever, or dengue fever.
arbutus an evergreen tree or shrub of the heath family having broad dark green leaves and bearing clusters of pink or white flowers and small strawberrylike fruit. [2 definitions]
arc any curved line; anything shaped like a bow or curve. [4 definitions]
arcade a series of arches connected and supported by pillars, columns, or the like. [3 definitions]
Arcadia an isolated mountainous region in southern Greece, associated in ancient times with rustic simplicity and innocence.
Arcadian of or pertaining to Arcadia. [4 definitions]
arcane of a secret or esoteric nature; mysterious; abstruse.
arcanum (often pl.) a deep secret or mystery, as of nature. [3 definitions]
arc furnace an electric furnace in which heat is produced by an arc formed between the material being heated and an electrode, or between two electrodes.
-arch leader; ruler.
arch1 a structural element, usu. of masonry, that is curved and used to span an open space such as a door. [5 definitions]
arch2 mischievous, sly, or teasing.
arch- principal; main. [3 definitions]
archaeo- ancient.
archaeoastronomy the study of the astronomy of prehistoric cultures.
archaeological of or relating to archaeology.