| archaeological | Relating to archaeology, or antiquities; as, archaeological researches. Archaeolog"ically. Source: Websters Dictionary (01 Mar 1998) |
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| archaeologist | One versed in archaeology; an antiquary. Source: Websters Dictionary (01 Mar 1998) |
| archaeology | <study> The science or study of antiquities, especially. Prehistoric antiquities, such as the remains of buildings or monuments of an early epoch, inscriptions, implements, and other relics, written manuscripts, etc. Origin: Gr.; ancient (fr. Beginning) + discourse, to speak. (04 Mar 1998) |
| archaeopteryx | <paleontology> A fossil bird, of the Jurassic period, remarkable for having a long tapering tail of many vertebrae with feathers along each side, and jaws armed with teeth, with other reptilian characteristics. Origin: Gr. Ancient + wing. Source: Websters Dictionary (01 Mar 1998) |
| archaeostomatous | <biology> Applied to a gastrula when the blastorope does not entirely up. Origin: Gr. Ancient + mouth. Source: Websters Dictionary (01 Mar 1998) |
| archaeozoic | <zoology> Like or belonging to the earliest forms of animal life. Origin: Gr. Ancient + animal. Source: Websters Dictionary (01 Mar 1998) |
| archaeus | Term first used by Valentine and later by Paracelsus and van Helmont to denote a spirit that presided over and governed bodily processes. Synonym: archeus. Origin: L. Fr. G. Archaios, chief, leader (05 Mar 2000) |
| archaic | Ancient; old; in jungian psychology, denoting the ancestral past of mental processes. Origin: G. Archaikos, ancient (05 Mar 2000) |
| archaic-paralogical thinking | prelogical thinking |
| Archambault, LaSalle | <person> U.S. Neurologist, 1879-1940. See: Meyer-Archambault loop. (05 Mar 2000) |
| archangel | 1. A chief angel; one high in the celestial hierarchy. 2. <botany> A term applied to several different species of plants (Angelica archangelica, Lamium album, etc). Origin: L. Archangelus, Gr., cf. OF. Archangel, F. Archange. See Arch-, pref, and Angel. Source: Websters Dictionary (01 Mar 1998) |
| archchemic | Of supreme chemical powers. "The archchemic sun." Source: Websters Dictionary (01 Mar 1998) |
| archduke | A prince of the imperial family of Austria. Formerly this title was assumed by the rulers of Lorraine, Brabant, Austria, etc. It is now appropriated to the descendants of the imperial family of Austria through the make line, all such male descendants being styled archduke, and all such female descendants archduchesses. Origin: Pref. Arch- + duke. Source: Websters Dictionary (01 Mar 1998) |
| arched crest | The ridge on the anterior surface of the arytenoid cartilage that separates the triangular from the oblong fovea. Synonym: crista arcuata cartilaginis arytenoideae, arched crest, arcuate crest. (05 Mar 2000) |
| arched root | <botany> Roots produced on the plant stems in a position above the normal position of roots, which serve to brace the plant during and following periods of prolonged inundation with water. (09 Oct 1997) |