orthogenesis

noun
or·​tho·​gen·​e·​sis | \ˌȯr-thə-ˈje-nə-səs \

Definition of orthogenesis 

: variation of organisms in successive generations that in some especially former evolutionary theories takes place in some predestined direction resulting in progressive evolutionary trends independent of external factors

Other Words from orthogenesis

orthogenetic \ˌȯr-​thə-​jə-​ˈne-​tik \ adjective
orthogenetically \ˌȯr-​thə-​jə-​ˈne-​ti-​k(ə-​)lē \ adverb

First Known Use of orthogenesis

1895, in the meaning defined above

History and Etymology for orthogenesis

New Latin

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The first known use of orthogenesis was in 1895

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orthogenesis

noun
or·​tho·​gen·​e·​sis | \ˌȯr-thə-ˈjen-ə-səs \
plural orthogeneses\-​ˌsēz \

Medical Definition of orthogenesis 

: variation of organisms in successive generations that in some evolutionary theories takes place in some predestined direction and results in progressive evolutionary trends independent of external factors

Other Words from orthogenesis

orthogenetic \-​jə-​ˈnet-​ik \ adjective

More from Merriam-Webster on orthogenesis

Britannica.com: Encyclopedia article about orthogenesis

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