orthogenesis

noun
or·​tho·​gen·​e·​sis | \ ˌȯr-thə-ˈje-nə-səs How to pronounce orthogenesis (audio) \

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

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Other Words from orthogenesis

orthogenetic \ ˌȯr-​thə-​jə-​ˈne-​tik How to pronounce orthogenesis (audio) \ adjective
orthogenetically \ ˌȯr-​thə-​jə-​ˈne-​ti-​k(ə-​)lē How to pronounce orthogenesis (audio) \ adverb

Examples of orthogenesis in a Sentence

Recent Examples on the Web The various models proposed for the mechanism of evolution, such as Lamarckian evolution, orthogenesis and use-disuse, all implied some level of teleology: that there was a directionality inherent in the process. Mano Singham, Scientific American, 5 Sep. 2021 The various models proposed for the mechanism of evolution, such as Lamarckian evolution, orthogenesis, and use-disuse, all implied some level of teleology, that there was a directionality inherent in the process. Mano Singham, Scientific American, 5 Sep. 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'orthogenesis.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of orthogenesis

1895, in the meaning defined above

History and Etymology for orthogenesis

New Latin

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Time Traveler for orthogenesis

Time Traveler

The first known use of orthogenesis was in 1895

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Dictionary Entries Near orthogenesis

orthoformic ester

orthogenesis

orthogenic

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Statistics for orthogenesis

Last Updated

20 Sep 2021

Cite this Entry

“Orthogenesis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/orthogenesis. Accessed 21 Oct. 2021.

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More Definitions for orthogenesis

orthogenesis

noun
or·​tho·​gen·​e·​sis | \ ˌȯr-thə-ˈjen-ə-səs How to pronounce orthogenesis (audio) \
plural orthogeneses\ -​ˌsēz How to pronounce orthogenesis (audio) \

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 How to pronounce orthogenesis (audio) \ adjective

More from Merriam-Webster on orthogenesis

Britannica.com: Encyclopedia article about orthogenesis

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