orthogenesis(redirected from orthogenesists)
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1. Biology The hypothesis, now largely discredited, that the evolution of species is linear and driven largely by internal factors rather than by natural selection.
2. Anthropology The hypothesis that all cultures evolve in a linear manner from primitivism to civilization.
or′tho·ge·net′ic (-jə-nĕt′ĭk) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
1. (Biology) biology
a. evolution of a group of organisms predetermined to occur in a particular direction
b. the theory that proposes such a development
2. (Sociology) the theory that there is a series of stages through which all cultures pass in the same order
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
or•tho•gen•e•sis(ˌɔr θoʊˈdʒɛn ə sɪs)
a. evolution of a species proceeding by continuous structural changes without presenting a branching pattern of descent.
b. a theory that such evolution of a species is due to a predetermined series of alterations and not subject to natural selection.
2. a hypothetical parallelism between the stages through which every culture necessarily passes in spite of secondary conditioning factors.
or`tho•ge•net′ic (-dʒəˈnɛt ɪk) adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
progressive evolution, leading to the development of a new form, as can be seen through successive generations. See also society. — orthogenetic, adj.See also: Biology
progressive evolution, leading to the development of a new form, as can be seen through successive generations. See also society. — orthogenetic, adj.See also: Evolution
the sociological theory that all cultures or societies follow the same fixed course of determinate evolution. See also evolution. — orthogenetic, adj.See also: Society
-Ologies & -Isms. Copyright 2008 The Gale Group, Inc. All rights reserved.