bipolarityn.

/bʌɪpəʊˈlarɪti/

Etymology: < bipolar adj. + -ity suffix.

1. Bipolar quality or state. Also transferred and figurative.

ΚΠ

1865 C. B. Mansfield Theory of Salts 53 The voltaic bipolarity of each.

1917 C. R. Payne tr. O. Pfister Psychoanalytic Method i. xii. 361 As a result of the ‘bipolarity of all psychic phenomena’, each of the two possible interpretations..may be correct.

1955 M. Beloff Foreign Policy & Democratic Process 9 We have been taught to view things in the light of the rivalry between two powers and two powers only..‘bipolarity’, as it is called.

2. The occurrence of the same species in each of the polar regions but not in the intervening zones (see also quot. 1959).

ΘΚΠ

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

cosmopolitanism1870

endemicity1886

endemism1886

bipolarity1896

radiation1898

zonation1898

frequency1913

provincialism1929

overdispersion1930

under-dispersion1935

provinciality1952

1896 A. E. Ortmann in Proc. Acad. Nat. Sci. Philadelphia 1895 191 Neither in this species is..a bipolarity of the genus probable.

1959 New Biol. 29 117 Bipolarity..has undergone some change of meaning... In a very short period of time, the sharpness of its meaning was lost and bipolarity came to include those cases where organisms occurred in the north and south temperate zones but were absent from the tropics. The term underwent still further changes and was used to cover not only species, but genera and even higher classification categories provided they had a discontinuous distribution with northern and southern forms.

This entry has not yet been fully updated (first published 1887; most recently modified version published online March 2019).

单词	bipolarity
释义	bipolarityn. /bʌɪpəʊˈlarɪti/ Etymology: < bipolar adj. + -ity suffix. 1. Bipolar quality or state. Also transferred and figurative. ΚΠ 1865 C. B. Mansfield Theory of Salts 53 The voltaic bipolarity of each. 1917 C. R. Payne tr. O. Pfister Psychoanalytic Method i. xii. 361 As a result of the ‘bipolarity of all psychic phenomena’, each of the two possible interpretations..may be correct. 1955 M. Beloff Foreign Policy & Democratic Process 9 We have been taught to view things in the light of the rivalry between two powers and two powers only..‘bipolarity’, as it is called. 2. The occurrence of the same species in each of the polar regions but not in the intervening zones (see also quot. 1959). ΘΚΠ the world > life > biology > balance of nature > distribution > [noun] cosmopolitanism1870 endemicity1886 endemism1886 bipolarity1896 radiation1898 zonation1898 frequency1913 provincialism1929 overdispersion1930 under-dispersion1935 provinciality1952 1896 A. E. Ortmann in Proc. Acad. Nat. Sci. Philadelphia 1895 191 Neither in this species is..a bipolarity of the genus probable. 1959 New Biol. 29 117 Bipolarity..has undergone some change of meaning... In a very short period of time, the sharpness of its meaning was lost and bipolarity came to include those cases where organisms occurred in the north and south temperate zones but were absent from the tropics. The term underwent still further changes and was used to cover not only species, but genera and even higher classification categories provided they had a discontinuous distribution with northern and southern forms. This entry has not yet been fully updated (first published 1887; most recently modified version published online March 2019). < n.1865
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