| ARCHAEBACTERIUM | • archaebacterium n. Any primitive bacteria-like organism in the kingdom Archaea. • archæbacterium n. (Rare) Alternative spelling of archaebacterium. • ARCHAEBACTERIUM n. any of the microorganisms comprising the archaea. |
| ARCHAEOBOTANIES | • ARCHAEOBOTANY n. the analysis and interpretation of plant remains found at archaeological sites, also ARCHEOBOTANY. |
| ARCHAEOBOTANIST | • archaeobotanist n. (Archaeology) A person engaged in archaeobotany. • ARCHAEOBOTANIST n. one who studies archaeobotany. |
| ARCHAEOMETRISTS | • archaeometrists n. Plural of archaeometrist. • ARCHAEOMETRIST n. one who practises archaeometry. |
| ARCHAEOPTERYXES | • archaeopteryxes n. Plural of archaeopteryx. • ARCHAEOPTERYX n. a Jurassic fossil bird of the Archaeopteryx genus, with a long bony tail, sharp-toothed jaws, and wings bearing three clawed digits. |
| ARCHAEZOOLOGIES | • ARCHAEZOOLOGY n. the study of zoological remains in archaeology, also ARCHAEOZOOLOGY, ARCHEOZOOLOGY. |
| ARCHEOASTRONOMY | • archeoastronomy n. Alternative spelling of archaeastronomy. • ARCHEOASTRONOMY n. the scientific study of the beliefs and practices concerning astronomy that existed in ancient and prehistoric civilizations. |
| ARCHEOBOTANISTS | • ARCHEOBOTANIST n. one who studies archeobotany. |
| ARCHEOLOGICALLY | • archeologically adv. In an archeological manner or fashion. • ARCHEOLOGICAL adv. relating to archeology, also ARCHAEOLOGICAL. |
| ARCHEOMAGNETISM | • archeomagnetism n. Alternative form of archaeomagnetism. • ARCHEOMAGNETISM n. an archaeological technique for dating certain clay objects by measuring the extent to which they have been magnetized by the earth's magnetic field. |
| ARCHEOZOOLOGIES | • ARCHEOZOOLOGY n. the study of zoological remains in archaeology, also ARCHAEOZOOLOGY, ARCHAEZOOLOGY. |
| ARCHEOZOOLOGIST | • archeozoologist n. Alternative spelling of archaeozoologist. • ARCHEOZOOLOGIST n. a specialist in archeozoology. |
| ARCHGENETHLIACS | • ARCHGENETHLIAC n. (Browning) in derogatory sense, the greatest of genethliacs or astrologers. |
| ARCHIDIACONATES | • archidiaconates n. Plural of archidiaconate. • ARCHIDIACONATE n. the office of archdeacon. |
| ARCHIEPISCOPACY | • archiepiscopacy n. (Ecclesiastical) The form of episcopacy in which the chief power is in the hands of archbishops. • archiepiscopacy n. (Ecclesiastical) The position or dignity of an archbishop. • ARCHIEPISCOPACY n. the rank or province of an archbishop. |
| ARCHIEPISCOPATE | • archiepiscopate n. (Ecclesiastical) an archbishopric. • ARCHIEPISCOPATE n. the rank or province of an archbishop. |
| ARCHITECTURALLY | • architecturally adv. In an architectural manner. • architecturally adv. Regarding architecture. • ARCHITECTURAL adv. of or relating to architecture. |
| ARCHPRIESTHOODS | • archpriesthoods n. Plural of archpriesthood. • ARCHPRIESTHOOD n. the office of archpriest. |
| ARCHPRIESTSHIPS | • ARCHPRIESTSHIP n. the office of archpriest. |