orthogenesisn.

Brit.

/ˌɔːθə(ʊ)ˈdʒɛnᵻsɪs/, U.S.

/ˌɔrθoʊˈdʒɛnəsəs/

Origin: A borrowing from German. Etymon: German Orthogenesis.

Etymology: < German Orthogenesis (W. Haacke Gestaltung u. Vererbung (1893) ii. 31) < ortho- ortho- comb. form + -genesis -genesis comb. form. Compare French orthogenèse (dated 1893 in Robert Dict. alphabétique et analogique (1986)).

Biology. Now chiefly historical.

Evolutionary change proceeding consistently in one direction, esp. as supposedly produced by a tendency to accumulate similar mutations in successive generations rather than by natural selection. Also in extended use.

ΘΚΠ

the world > life > biology > biological processes > evolution > [noun] > processes or types of evolution

transmutation1626

substitution1822

subspeciation1826

metamorphosis1835

phytogenesis1847

phytogeny1850

anamorphosis1852

correlation1859

advergence1861

convergence1861

phylogeny1869

ontogeny1872

recapitulation1874

ontogenesis1875

phylogenesis1875

biogenesis1876

abiogenesis1884

anagenesis1889

tachygenesis1893

orthogenesis1895

adaptive radiation1898

speciation1906

microevolution1911

subspeciation1921

raciation1934

orthogenetics1937

encephalization1938

proterogenesis1938

allomorphosis1941

cladogenesis1953

Wallace effect1966

metachromism1968

punctuation1976

speciational evolution1988

tachygen-

1895 Nature 3 Oct. 554/2 Prof. Eimer, of Tübingen, spoke..on the subject of orthogenesis.

1911 Encycl. Brit. XXVII. 912/1 Many successful series,..as they have survived, must inevitably display orthogenesis to some extent.

1930 G. R. de Beer Embryol. & Evol. iv. 32 This incorrigible tendency to produce larger and larger horns, to vary continuously in the same direction, has been given the name of orthogenesis.

1958 Far Eastern Survey 27 143/2 Implicit in these concepts of reductionism, recapitulation, and das Mutterrecht is the notion of orthogenesis (that cultures and psyches develop along one straight line).

1973 Nature 10 Aug. 375/1 A non-Darwinian orthogenesis had sealed the fate of Megaloceros under the oppressive weight of its own enlarging antlers.

1986 R. L. Selman & A. P. Demorest in D. J. Bearison & H. Zimiles Thought & Emotion vii. 99 What is needed is a way to study the developmental nature of social conduct... For this..it useful to turn to the orthogenetic approach... Orthogenesis is a principle whereby development proceeds from a state of relative globality and lack of differentiation to a state of differentiation and hierarchic integration.

2000 New Scientist 5 Feb. 32/2 Orthogenesis was an alternative to Darwinian natural selection, which found favour in the US and Germany, especially among palaeontologists and developmental biologists.

This entry has been updated (OED Third Edition, September 2004; most recently modified version published online March 2022).

单词	orthogenesis
释义	orthogenesisn. Brit. /ˌɔːθə(ʊ)ˈdʒɛnᵻsɪs/, U.S. /ˌɔrθoʊˈdʒɛnəsəs/ Origin: A borrowing from German. Etymon: German Orthogenesis. Etymology: < German Orthogenesis (W. Haacke Gestaltung u. Vererbung (1893) ii. 31) < ortho- ortho- comb. form + -genesis -genesis comb. form. Compare French orthogenèse (dated 1893 in Robert Dict. alphabétique et analogique (1986)). Biology. Now chiefly historical. Evolutionary change proceeding consistently in one direction, esp. as supposedly produced by a tendency to accumulate similar mutations in successive generations rather than by natural selection. Also in extended use. ΘΚΠ the world > life > biology > biological processes > evolution > [noun] > processes or types of evolution transmutation1626 substitution1822 subspeciation1826 metamorphosis1835 phytogenesis1847 phytogeny1850 anamorphosis1852 correlation1859 advergence1861 convergence1861 phylogeny1869 ontogeny1872 recapitulation1874 ontogenesis1875 phylogenesis1875 biogenesis1876 abiogenesis1884 anagenesis1889 tachygenesis1893 orthogenesis1895 adaptive radiation1898 speciation1906 microevolution1911 subspeciation1921 raciation1934 orthogenetics1937 encephalization1938 proterogenesis1938 allomorphosis1941 cladogenesis1953 Wallace effect1966 metachromism1968 punctuation1976 speciational evolution1988 tachygen- 1895 Nature 3 Oct. 554/2 Prof. Eimer, of Tübingen, spoke..on the subject of orthogenesis. 1911 Encycl. Brit. XXVII. 912/1 Many successful series,..as they have survived, must inevitably display orthogenesis to some extent. 1930 G. R. de Beer Embryol. & Evol. iv. 32 This incorrigible tendency to produce larger and larger horns, to vary continuously in the same direction, has been given the name of orthogenesis. 1958 Far Eastern Survey 27 143/2 Implicit in these concepts of reductionism, recapitulation, and das Mutterrecht is the notion of orthogenesis (that cultures and psyches develop along one straight line). 1973 Nature 10 Aug. 375/1 A non-Darwinian orthogenesis had sealed the fate of Megaloceros under the oppressive weight of its own enlarging antlers. 1986 R. L. Selman & A. P. Demorest in D. J. Bearison & H. Zimiles Thought & Emotion vii. 99 What is needed is a way to study the developmental nature of social conduct... For this..it useful to turn to the orthogenetic approach... Orthogenesis is a principle whereby development proceeds from a state of relative globality and lack of differentiation to a state of differentiation and hierarchic integration. 2000 New Scientist 5 Feb. 32/2 Orthogenesis was an alternative to Darwinian natural selection, which found favour in the US and Germany, especially among palaeontologists and developmental biologists. This entry has been updated (OED Third Edition, September 2004; most recently modified version published online March 2022). < n.1895
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