retropositionn.

Brit.

/ˌrɛtrəʊpəˈzɪʃn/, U.S.

/ˌrɛtroʊpəˈzɪʃ(ə)n/

Origin: Formed within English, by derivation. Etymons: retro- prefix, position n.

Etymology: < retro- prefix + position n.

†1. Relocation to an earlier time. Obsolete. rare.

ΚΠ

1825 Gentleman's Mag. Jan. 1/2 In a recent performance.., where the scene is laid in the reign of George II, John Duke of Argyll..is by a strange and peculiar felicity of retroposition, attired in the Vandyke dress of the time of Charles I.

†2. Displacement or delay of the tide with respect to the position of the moon; spec. the distance (in longitude) between the sublunar point and the associated position of high tide. Obsolete.

ΘΚΠ

the world > the earth > water > flow or flowing > tide > type of tide > [noun] > ebbing or flowing out

ebba1000

ebbingc1000

fresha1552

fall1571

vale-water1589

refloat1594

reflow1610

downtide1668

recurrency1724

out1756

retroposition1836

ebb-tide1837

recurrence1857

1836 W. Whewell in Philos. Trans. (Royal Soc.) 126 3 The ocean would form a spheroid, of which the pole would revolve round the earth, following the moon at a certain distance of terrestrial longitude... Let this distance be called the Retroposition of the theoretical tide in longitude.

1845 G. B. Airy Tides & Waves 363* in Encycl. Metrop. V The effect of friction will be a retroposition of tides.

1867 Smithsonian Contrib. Knowl. 15 v. 146 This retroposition of the tide, which is mostly the effect of friction, has been called the ‘age’ of the tide.

3. Medicine. Posterior displacement of the uterus or other part of the body; an instance of this. Also: †the action of moving a part of the body backwards (obsolete).

ΚΠ

1873 Lancet 1 Mar. 309/1 The only rational means of overcoming displacements of the uterus backwards is retroposition of the vaginal portion.

1883 D. B. Hart & A. H. F. Barbour Man. Gynecol. (ed. 2) 315 The uterine axis may be (pathologically) anteflexed.., so that the normal curvature is increased; this is sometimes associated with retroposition.

1922 Amer. Jrnl. Surg. 36 319/1 The need of early correction of retropositions following labor is clearly evident.

1933 Internat. Jrnl. Orthodontia & Dentistry for Children 19 181 Very often in these cases the maxillary incisors are found in retroposition.

2009 Jrnl. Craniofacial Surg. 20 315 Pierre Robin sequence (PRS) is a congenital malformation in which micrognathia causes retroposition of the tongue.

4. Molecular Biology. = retrotransposition n. at retro- prefix 1.

ΚΠ

1986 Proc. National Acad. Sci. U.S.A. 83 8460/1 It has been proposed that reinsertion (retroposition) into the genome of partially spliced, reverse-transcribed mRNA transcripts may give rise to new semi-processed genes.

2008 New Scientist 22 Nov. 45 Many viruses and genetic parasites copy themselves through retroposition.

This entry has been updated (OED Third Edition, March 2010; most recently modified version published online March 2022).

单词	retroposition
释义	retropositionn. Brit. /ˌrɛtrəʊpəˈzɪʃn/, U.S. /ˌrɛtroʊpəˈzɪʃ(ə)n/ Origin: Formed within English, by derivation. Etymons: retro- prefix, position n. Etymology: < retro- prefix + position n. †1. Relocation to an earlier time. Obsolete. rare. ΚΠ 1825 Gentleman's Mag. Jan. 1/2 In a recent performance.., where the scene is laid in the reign of George II, John Duke of Argyll..is by a strange and peculiar felicity of retroposition, attired in the Vandyke dress of the time of Charles I. †2. Displacement or delay of the tide with respect to the position of the moon; spec. the distance (in longitude) between the sublunar point and the associated position of high tide. Obsolete. ΘΚΠ the world > the earth > water > flow or flowing > tide > type of tide > [noun] > ebbing or flowing out ebba1000 ebbingc1000 fresha1552 fall1571 vale-water1589 refloat1594 reflow1610 downtide1668 recurrency1724 out1756 retroposition1836 ebb-tide1837 recurrence1857 1836 W. Whewell in Philos. Trans. (Royal Soc.) 126 3 The ocean would form a spheroid, of which the pole would revolve round the earth, following the moon at a certain distance of terrestrial longitude... Let this distance be called the Retroposition of the theoretical tide in longitude. 1845 G. B. Airy Tides & Waves 363* in Encycl. Metrop. V The effect of friction will be a retroposition of tides. 1867 Smithsonian Contrib. Knowl. 15 v. 146 This retroposition of the tide, which is mostly the effect of friction, has been called the ‘age’ of the tide. 3. Medicine. Posterior displacement of the uterus or other part of the body; an instance of this. Also: †the action of moving a part of the body backwards (obsolete). ΚΠ 1873 Lancet 1 Mar. 309/1 The only rational means of overcoming displacements of the uterus backwards is retroposition of the vaginal portion. 1883 D. B. Hart & A. H. F. Barbour Man. Gynecol. (ed. 2) 315 The uterine axis may be (pathologically) anteflexed.., so that the normal curvature is increased; this is sometimes associated with retroposition. 1922 Amer. Jrnl. Surg. 36 319/1 The need of early correction of retropositions following labor is clearly evident. 1933 Internat. Jrnl. Orthodontia & Dentistry for Children 19 181 Very often in these cases the maxillary incisors are found in retroposition. 2009 Jrnl. Craniofacial Surg. 20 315 Pierre Robin sequence (PRS) is a congenital malformation in which micrognathia causes retroposition of the tongue. 4. Molecular Biology. = retrotransposition n. at retro- prefix 1. ΚΠ 1986 Proc. National Acad. Sci. U.S.A. 83 8460/1 It has been proposed that reinsertion (retroposition) into the genome of partially spliced, reverse-transcribed mRNA transcripts may give rise to new semi-processed genes. 2008 New Scientist 22 Nov. 45 Many viruses and genetic parasites copy themselves through retroposition. This entry has been updated (OED Third Edition, March 2010; most recently modified version published online March 2022). < n.1825
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