overdispersedadj.

Brit.

/ˌəʊvədᵻˈspəːst/, U.S.

/ˈˌoʊvərdəˈspərst/

Origin: Formed within English, by derivation. Etymons: over- prefix, dispersed adj.

Etymology: < over- prefix + dispersed adj., after overdispersion n.

Chiefly Statistics.

1. Spread out to a greater degree or more evenly scattered than usual or expected; more evenly distributed than would be predicted as the result of random distribution; exhibiting or characterized by overdispersal. Cf. overdispersion n. 2.This is opposed in meaning to sense 2: see quot. 1957 at sense 2 at this sense, and note s.v. overdispersion n. 2.

ΚΠ

1931 Science 4 Dec. 577/1 Experiments with forty-six patients suffering from functional psychoses have shown a correlation between the type of insanity and the state of dispersion of the brain proteins. Schizophrenia is an over-dispersed type.

1946 Ecol. Monogr. 16 73/1 This expression..will be negative when the animals are more evenly distributed (overdispersed) than would occur in the Poisson case.

1998 Amer. Naturalist 152 209/1 (caption) Tsuga seed rain was overdispersed (more regular than Poisson).

2. Exhibiting or characterized by statistical overdispersion; more unevenly distributed than would be the case if each instance were independent of the rest; clustered, aggregated; (of a distribution) having a variance greater than that predicted on the basis of independence and homogeneity. Cf. overdispersion n. 1.

ΘΚΠ

the world > life > biology > balance of nature > distribution > [adjective]

mundane1844

cosmopolite1852

cosmopolitan1860

vagile1903

sympatric1904

endemic1905

overdispersed1940

allopatric1942

1940 Proc. Linn. Soc. New S. Wales 65 135 It has been found that many species are not randomly distributed, but are over-dispersed (i.e. aggregated).

1957 P. Greig-Smith Quantitative Plant Ecol. iii. 56 The former has been termed overdispersed (referring to the distribution curve obtained) and the latter underdispersed. Unfortunately these terms have sometimes been used in the reverse sense (referring to the pattern of individuals on the ground)..and are better avoided.

1976 Evolution 30 678/1 (caption) Overdispersed populations have too many extreme and too few intermediate phenotypes.

1990 Jrnl. Zool. 220 634 The frequency distribution of numbers of worms per host is seen to become gradually more overdispersed as the hosts increase in size.

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

单词	overdispersed
释义	overdispersedadj. Brit. /ˌəʊvədᵻˈspəːst/, U.S. /ˈˌoʊvərdəˈspərst/ Origin: Formed within English, by derivation. Etymons: over- prefix, dispersed adj. Etymology: < over- prefix + dispersed adj., after overdispersion n. Chiefly Statistics. 1. Spread out to a greater degree or more evenly scattered than usual or expected; more evenly distributed than would be predicted as the result of random distribution; exhibiting or characterized by overdispersal. Cf. overdispersion n. 2.This is opposed in meaning to sense 2: see quot. 1957 at sense 2 at this sense, and note s.v. overdispersion n. 2. ΚΠ 1931 Science 4 Dec. 577/1 Experiments with forty-six patients suffering from functional psychoses have shown a correlation between the type of insanity and the state of dispersion of the brain proteins. Schizophrenia is an over-dispersed type. 1946 Ecol. Monogr. 16 73/1 This expression..will be negative when the animals are more evenly distributed (overdispersed) than would occur in the Poisson case. 1998 Amer. Naturalist 152 209/1 (caption) Tsuga seed rain was overdispersed (more regular than Poisson). 2. Exhibiting or characterized by statistical overdispersion; more unevenly distributed than would be the case if each instance were independent of the rest; clustered, aggregated; (of a distribution) having a variance greater than that predicted on the basis of independence and homogeneity. Cf. overdispersion n. 1. ΘΚΠ the world > life > biology > balance of nature > distribution > [adjective] mundane1844 cosmopolite1852 cosmopolitan1860 vagile1903 sympatric1904 endemic1905 overdispersed1940 allopatric1942 1940 Proc. Linn. Soc. New S. Wales 65 135 It has been found that many species are not randomly distributed, but are over-dispersed (i.e. aggregated). 1957 P. Greig-Smith Quantitative Plant Ecol. iii. 56 The former has been termed overdispersed (referring to the distribution curve obtained) and the latter underdispersed. Unfortunately these terms have sometimes been used in the reverse sense (referring to the pattern of individuals on the ground)..and are better avoided. 1976 Evolution 30 678/1 (caption) Overdispersed populations have too many extreme and too few intermediate phenotypes. 1990 Jrnl. Zool. 220 634 The frequency distribution of numbers of worms per host is seen to become gradually more overdispersed as the hosts increase in size. This entry has been updated (OED Third Edition, December 2004; most recently modified version published online March 2022). < adj.1931
随便看	θ174024 θ174025 θ174026 θ174027 θ174028 θ174029 θ17403 θ174030 θ174031 θ174032 θ174033 θ174034 θ174035 θ174036 θ174037 θ174038 θ174039 θ17404 θ174040 θ174041 θ174042 θ174043 θ174044 θ174045 θ174046