| arcade | An anatomical structure or structures (especially a blood vessel) taking the form of a series of arches. Origin: L. Arcus, arc, bow (05 Mar 2000) |
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| arcadia | 1. A mountainous and picturesque district of Greece, in the heart of the Peloponnesus, whose people were distinguished for contentment and rural happiness. 2. Any region or scene of simple pleasure and untroubled quiet. "Where the cow is, there is Arcadia." (J. Burroughs) Origin: L. Arcadia, Gr. Source: Websters Dictionary (01 Mar 1998) |
| Arcanobacterium | A genus of nonmotile, facultatively anaerobic bacteria containing Gram-positive slender irregular rods, sometimes showing clubbed ends that may be in V formation with no filaments. These organisms are obligate parasites of the pharynx in farm animals and humans, occasionally causing lesions on the pharynx or skin. The type species is Arcanobacterium haemolyticum. (05 Mar 2000) |
| Arcanobacterium haemolyticum | A species that causes pharyngitis and chronic skin ulcers in humans as well as farm animals. (05 Mar 2000) |
| arcanum | Origin: L, fr. Arcanus closed, secret, fr. Arca chest, box, fr. Arcere to inclose. See Ark. 1. A secret; a mystery; generally used in the plural. "Inquiries into the arcana of the Godhead." (Warburton) 2. <medicine> A secret remedy; an elixir. Source: Websters Dictionary (01 Mar 1998) |
| arcate | Curved like a bow. (09 Oct 1997) |