orthogenesis

UK:^*^*UK and possibly other pronunciationsUK and possibly other pronunciations/ˌɔːθəʊˈdʒɛnɪsɪs/US:USA pronunciation: respellingUSA pronunciation: respelling(ôr′thə jen′ə sis)

or•tho•gen•e•sis (ôr′thə jen′ə sis),USA pronunciation n.

Biology
- Also called orthoselection. evolution of a species proceeding by continuous structural changes in a single lineage without presenting a branching pattern of descent.
- a theory that the evolution of a species in a continuous, nonbranching manner is due to a predetermined series of alterations intrinsic to the species and not subject to natural selection.
Sociologya hypothetical parallelism between the stages through which every culture necessarily passes, in spite of secondary conditioning factors.

Neo-Latin; see ortho-, genesis
1890–95

Collins Concise English Dictionary © HarperCollins Publishers::

orthogenesis /ˌɔːθəʊˈdʒɛnɪsɪs/ n

- evolution of a group of organisms predetermined to occur in a particular direction
- the theory that proposes such a development
the theory that there is a series of stages through which all cultures pass in the same order

orthogenetic /ˌɔːθəʊdʒɪˈnɛtɪk/ adj ˌorthogeˈnetically adv

'orthogenesis' also found in these entries (note: many are not synonyms or translations):

orthogenetic - orthoselection

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orthogenesis