acrocentricadj.n.

Brit.

/ˌakrə(ʊ)ˈsɛntrɪk/, U.S.

/ˌækrəˈsɛntrɪk/

Origin: Formed within English, by compounding. Etymons: acro- comb. form, -centric comb. form.

Etymology: < acro- comb. form + -centric comb. form.

Cell Biology.

A. adj.

Of a chromosome: having the centromere close to one end, so that one arm is much shorter than the other Cf. metacentric adj.², telocentric adj.

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

1945 M. J. D. White Animal Cytol. & Evol. ii. 20 A distinction still exists in practice between those [chromosomes] which have the centromere somewhere near the middle and those in which it is very close to the end. The former we shall call metacentric, the latter acrocentric.

1990 A. Moguilevsky in R. Whatley & C. Maybury Ostracoda & Global Events xiv. 194/1 In V. graminicola 14 of the 16 chromosomes are metacentric/submetacentric and the remaining 2 are acrocentric and slightly smaller.

2005 A. Scheuerle Understanding Genetics vi. 61 Robertsonian translocations always involve the acrocentric chromosomes.

B. n.

An acrocentric chromosome.

ΘΚΠ

the world > life > biology > biological processes > genetic activity > genetic components > [noun] > chromosome > types of chromosome

chromoplastid1885

accessory chromosome1899

chromoplast1902

X1902

heterochromosome1904

idiochromosome1905

macrochromosome1905

allosome1906

autosome1906

monosome1906

sex chromosome1906

supernumerary1907

X chromosome1911

Y chromosome1911

univalent1912

euchromosome1914

W1917

monosome1921

tetrasome1921

trisome1921

heterosome1938

isochromosome1939

trisomic1939

metacentric1945

acrocentric1949

polycentric1953

Philadelphia chromosome1961

monocentric1979

1949 I. F. Henderson & W. D. Henderson Dict. Sci. Terms (ed. 4) 5/1 Acrocentric.., a rod-shaped chromosome.

1950 Nature 9 Dec. 996/1 Ten chromosomes can be paired, but three have no similar partners. These are the X.., the smallest of the set (Y₁), and an acrocentric (Y₂).

2000 F. Ankel-Simons Primate Anat. (ed. 2) xii. 423 Cebidae... Their karyotype is a combination of 30 submetacentrics and 2 acrocentrics.

This entry has been updated (OED Third Edition, December 2011; most recently modified version published online December 2021).

单词	acrocentric
释义	acrocentricadj.n. Brit. /ˌakrə(ʊ)ˈsɛntrɪk/, U.S. /ˌækrəˈsɛntrɪk/ Origin: Formed within English, by compounding. Etymons: acro- comb. form, -centric comb. form. Etymology: < acro- comb. form + -centric comb. form. Cell Biology. A. adj. Of a chromosome: having the centromere close to one end, so that one arm is much shorter than the other Cf. metacentric adj.², telocentric adj. 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 1945 M. J. D. White Animal Cytol. & Evol. ii. 20 A distinction still exists in practice between those [chromosomes] which have the centromere somewhere near the middle and those in which it is very close to the end. The former we shall call metacentric, the latter acrocentric. 1990 A. Moguilevsky in R. Whatley & C. Maybury Ostracoda & Global Events xiv. 194/1 In V. graminicola 14 of the 16 chromosomes are metacentric/submetacentric and the remaining 2 are acrocentric and slightly smaller. 2005 A. Scheuerle Understanding Genetics vi. 61 Robertsonian translocations always involve the acrocentric chromosomes. B. n. An acrocentric chromosome. ΘΚΠ the world > life > biology > biological processes > genetic activity > genetic components > [noun] > chromosome > types of chromosome chromoplastid1885 accessory chromosome1899 chromoplast1902 X1902 heterochromosome1904 idiochromosome1905 macrochromosome1905 allosome1906 autosome1906 monosome1906 sex chromosome1906 supernumerary1907 X chromosome1911 Y chromosome1911 univalent1912 euchromosome1914 W1917 monosome1921 tetrasome1921 trisome1921 heterosome1938 isochromosome1939 trisomic1939 metacentric1945 acrocentric1949 polycentric1953 Philadelphia chromosome1961 monocentric1979 1949 I. F. Henderson & W. D. Henderson Dict. Sci. Terms (ed. 4) 5/1 Acrocentric.., a rod-shaped chromosome. 1950 Nature 9 Dec. 996/1 Ten chromosomes can be paired, but three have no similar partners. These are the X.., the smallest of the set (Y₁), and an acrocentric (Y₂). 2000 F. Ankel-Simons Primate Anat. (ed. 2) xii. 423 Cebidae... Their karyotype is a combination of 30 submetacentrics and 2 acrocentrics. This entry has been updated (OED Third Edition, December 2011; most recently modified version published online December 2021). < adj.n.1945
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