pericentricadj.

Brit.

/ˌpɛrɪˈsɛntrɪk/, U.S.

/ˌpɛrəˈsɛntrɪk/

Origin: Formed within English, by derivation. Etymons: peri- prefix, -centric comb. form.

Etymology: < peri- prefix + -centric comb. form. In sense 2 after pericentre n.With sense 1 compare French péricentrique (1869 in Littré). With sense 3 compare paracentric adj.²

1. = pericentral adj. rare.

ΘΚΠ

the world > space > relative position > condition of being external > surrounding > [adjective] > a centre

pericentric1857

pericentral1889

1857 R. G. Mayne Expos. Lexicon Med. Sci. (1860) Pericentricus, applied by A. Richard to the insertion of stamens when the undivided part of the calyx being plane or only concave, the stamens appear to be disposed around the centre, as in the Polygoneæ: pericentric.

1923 Science 20 Apr. 460/2 Nearly 500 feet of successive lava flows overlie the stratum of fragments ejected... Judging from the present slow rate of pericentric outpourings.., this would call for a great period of time.

2. Astronomy. Of or relating to a pericentre. rare before late 20th cent.

ΘΚΠ

the world > the universe > heavenly body > movement of heavenly bodies > [adjective] > movement in orbit > parts of orbit

perihelian1690

aphelian1739

perihelial1785

periastral1872

pericentric1888

1888 Proc. Royal Soc. 44 6 The orbits will have a tendency to get more and more elliptic, while the pericentric distance will at the same time be reduced.

1970 Science 11 Dec. 1198/1 The moon's angular momentum h is closely given by the product of escape velocity v₀ and pericentric distance R₀.

2000 Science (Nexis) 2 June 1617 A galaxy moving edge-on at first pericentric passage is likely to be inclined to the direction of motion at some other point of its orbit.

3. Cell Biology. Involving parts of a chromosome on both sides of the centromere. Opposed to paracentric adj.²

ΘΚΠ

the world > life > biology > biological processes > genetic activity > genetic components > [adjective] > chromosome > centromere

acentric1899

telomitic1917

centric1937

paracentric1938

pericentric1938

metacentric1939

telocentric1939

centromeric1941

multicentric1941

polycentric1943

acrocentric1945

subtelocentric1954

submetacentric1957

subacrocentric1960

1938 H. J. Muller in Collecting Net 13 187/2 If the breaks included the centromere between them, being ‘pericentric’, the mitotic chromosome will have the relative sizes of its two arms altered.

1962 Lancet 6 Jan. 21/2 Chromosome analyses..have disclosed abnormalities which we attribute to pericentric inversion of a maternal 21st chromosome.

1999 Proc. National Acad. Sci. U.S.A. 96 7409/2 Functional genes were found not only in euchromatin, but also in the heterochromatic pericentric regions.

This entry has been updated (OED Third Edition, December 2005; most recently modified version published online March 2022).

单词	pericentric
释义	pericentricadj. Brit. /ˌpɛrɪˈsɛntrɪk/, U.S. /ˌpɛrəˈsɛntrɪk/ Origin: Formed within English, by derivation. Etymons: peri- prefix, -centric comb. form. Etymology: < peri- prefix + -centric comb. form. In sense 2 after pericentre n.With sense 1 compare French péricentrique (1869 in Littré). With sense 3 compare paracentric adj.² 1. = pericentral adj. rare. ΘΚΠ the world > space > relative position > condition of being external > surrounding > [adjective] > a centre pericentric1857 pericentral1889 1857 R. G. Mayne Expos. Lexicon Med. Sci. (1860) Pericentricus, applied by A. Richard to the insertion of stamens when the undivided part of the calyx being plane or only concave, the stamens appear to be disposed around the centre, as in the Polygoneæ: pericentric. 1923 Science 20 Apr. 460/2 Nearly 500 feet of successive lava flows overlie the stratum of fragments ejected... Judging from the present slow rate of pericentric outpourings.., this would call for a great period of time. 2. Astronomy. Of or relating to a pericentre. rare before late 20th cent. ΘΚΠ the world > the universe > heavenly body > movement of heavenly bodies > [adjective] > movement in orbit > parts of orbit perihelian1690 aphelian1739 perihelial1785 periastral1872 pericentric1888 1888 Proc. Royal Soc. 44 6 The orbits will have a tendency to get more and more elliptic, while the pericentric distance will at the same time be reduced. 1970 Science 11 Dec. 1198/1 The moon's angular momentum h is closely given by the product of escape velocity v₀ and pericentric distance R₀. 2000 Science (Nexis) 2 June 1617 A galaxy moving edge-on at first pericentric passage is likely to be inclined to the direction of motion at some other point of its orbit. 3. Cell Biology. Involving parts of a chromosome on both sides of the centromere. Opposed to paracentric adj.² ΘΚΠ the world > life > biology > biological processes > genetic activity > genetic components > [adjective] > chromosome > centromere acentric1899 telomitic1917 centric1937 paracentric1938 pericentric1938 metacentric1939 telocentric1939 centromeric1941 multicentric1941 polycentric1943 acrocentric1945 subtelocentric1954 submetacentric1957 subacrocentric1960 1938 H. J. Muller in Collecting Net 13 187/2 If the breaks included the centromere between them, being ‘pericentric’, the mitotic chromosome will have the relative sizes of its two arms altered. 1962 Lancet 6 Jan. 21/2 Chromosome analyses..have disclosed abnormalities which we attribute to pericentric inversion of a maternal 21st chromosome. 1999 Proc. National Acad. Sci. U.S.A. 96 7409/2 Functional genes were found not only in euchromatin, but also in the heterochromatic pericentric regions. This entry has been updated (OED Third Edition, December 2005; most recently modified version published online March 2022). < adj.1857
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