archaeologyThe study of the past by excavation and analysis of its material remains.
archaeomaenidAny extinct fish of the family Archaeomaenidae
archaeomagneticOf or pertaining to the science of interpreting the signatures of the Earth’s magnetic field at past times that are recorded in ancient materials.
archaeomagnetismThe magnetism of the Earth in the geologic past; the study and measurement of this magnetism in order to date a specimen with iron.
archaeometristA scientist whose speciality in archaeometry
archaeometryThe application of techniques and methodologies of the natural sciences to archaeology, mostly for dating, analysis, survey and confirmation of provenance or authenticity.
archaeophyteA plant which was introduced to an area by humans (or arrived naturally, but from an area in which it was present as a human introduction) and became naturalized before 1500 C.E. (but especially in prehistoric times).
archaeplastidanAny autotrophic eukaryote of the kingdom Archaeplastida
archaerhodopsinAny of a group of proteins, isolated from halobacteria, that are light-driven proton pumps
archaicThe prehistoric period intermediate between the earliest period (‘Paleo-Indian’, ‘Paleo-American’, ‘American‐paleolithic’, etc.) of human presence in the Western Hemisphere, and the most recent prehistoric period (‘Woodland’, etc.).
archallaxisThe complete elimination of palingenetic features during the development of an embryo, such that ontogeny begins with an early deviation from the ancestral pattern.
archamoebidAny protist of the infraphylum Archamoebae
ArchanaA female given name from Sanskrit used in India.
archangelA powerful angel that leads many other angels, but is still loyal to a deity, and often seen as belonging to a particular archangelical rank or order within a greater hierarchy of angels. (Judeo-Christian examples: Gabriel, Michael, Raphael, Uriel).
archangelicOf, relating to, resembling, or characteristic of archangels.
archangelicalOf, relating to, resembling, or characteristic of archangels.
archangelicinAn angular furanocoumarin chemical compound found in angelica root, 2-(9-{[(2Z)-2-methylbut-2-enoyl]oxy}-2-oxo-2H,8H,9H-furo[2,3-H]chromen-8-yl)propan-2-yl (2Z)-2-methylbut-2-enoate
archbishopA senior bishop who is in charge of an archdiocese, and presides over a group of dioceses called a province (in Catholicism, Eastern Orthodoxy, Anglicanism, etc.)
archbishopdomThe realm, sphere, domain, office, or jurisdiction of an archbishop; archbishopric.