Definition of bipolar in English:
1Having or relating to two poles or extremities: a sharply bipolar division of affluent and underclass
More example sentences
- The breakdown of the Soviet Union, which formed one of the two poles in the former bipolar world order brought to an end the set of rules that had governed international relations since the end of World War II.
- Indeed, when communism constituted one of the two poles in the previous bipolar world order, terrorist acts were few and far between.
- At its heart lie the contention that ‘Bedouin society never changes’ and the bipolar division of history into pre-modern and modern communities.
1.1Relating to or occurring in both North and South polar regions: bipolar species
More example sentences
- When our final Guggenheim on this planet opens in 2015 at the North Pole, we will at last have accomplished our goal of being not only global but bipolar.
- Recent research on the Antarctic ice core points to the fact that both hemispheres are bound by a 'bipolar seesaw.'
- The millennial-scale asynchrony of Antarctic and Greenland climate records during the last glacial period implies that the global climate system acts as a bipolar see-saw driven by either high-latitudinal and/or near-equatorial sea-surface perturbations.
2(Of psychiatric illness) characterized by both manic and depressive episodes, or manic ones only.
- Mania is a component of manic depressive or bipolar disease.
- I'm mentally ill with bipolar manic depression illness.
- It has become reasonably well accepted in the psychiatric literature that bipolar patients treated with an antidepressant for a depressive episode can be at risk to ‘switch’ into a manic episode.
2.1(Of a person) suffering from bipolar disorder.
- She even gave him a short trial of lithium upon deciding he was bipolar.
- She spent little time on psychiatric inpatient units working, for example, with bipolar patients in their active manic phases.
- Keck et al were the first to attempt to utilize a loading dose strategy for valproate in bipolar manic patients.
3(Of a nerve cell) having two axons, one either side of the cell body.
- These cells appeared mainly as thin and bipolar cells closely related to the hypertrophic nerve trunks.
- Active movement is largely confined to each end of these elongated bipolar cells, enabling them to exert traction on the underlying substratum and to shuffle in between each other, always along the medio-lateral axis.
- At goldfish retinal bipolar cells, the calcium requirement for physiological release rates is reported to be >100 M.
4 Electronics (Of a transistor or other device) using both positive and negative charge carriers.
- Thus, positive feedback between two bipolar junction transistors is reduced and then latch-up is eliminated.
- A bipolar junction transistor is provided that includes an intrinsic collector region of first conductivity type in a semiconductor substrate.
- The differential amplifier further includes a lateral bipolar transistor.
- Example sentences
- The war on terrorism has been marked by a strange cultural bipolarity; the hemisphere of policy is a place of relentless tragedy, while the hemisphere of culture and communication stays sane by walling off the other hemisphere.
- His only supporters are the old media (eastern newspapers and the three TV networks), determined to elect him despite his bipolarity.
- The bipolarity of the Cold War had gone, Russia should have been encouraged into the European structures and not structures like NATO built against it, and extended against it.
Pronunciation: /ˌbīpōˈlaritē, -pə-/noun
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