aetiology etiology. —aetiological, adj. anthropogeny the study of human origins. —anthropogenic, anthropogenetic adj. archology the science of origins. autochthonism, autochthony the state of being aboriginal or native to a particular area. —autochthonous, adj. etiology the study of the causes for and origin of any phenomena. Also spelled aetiology. —etiological, adj. isogenesis, isogeny the state or process of deriving from the same source or origins, as different parts deriving from the same embryo tissues. —isogenic, isogenetic, adj. monogenism the theory that the entire human race is descended from a single ancestral pair. Also monogenesis, monogeny. —monogenist, n. —monogenistic, adj.
- plural form of origin