Definition of unipolar
: relating to, affected with, or being a manic-depressive disorder in which there is only a depressive phase <unipolar depression>
First Known Use of unipolar
Medical Definition of unipolar
1: having but one process <a unipolar neuron>
2: relating to or being a manic-depressive disorder in which there is a depressive phase only <unipolar depression>—compare bipolar 3
3: involving or being electrodes or leads recording electrical potentials between the scalp and the ground or a distant bodily site
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Medical Dictionary: Definition of "unipolar"
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