Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.


having but a single pole or process, as a nerve cell.
pertaining to mood disorders in which only depressive episodes occur.
unipolar disorders depressive disorders.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.


1. Having but one pole; denoting a nerve cell from which the branches project from one side only.
2. Situated at one extremity only of a cell.
Farlex Partner Medical Dictionary © Farlex 2012


1. Having, acting by means of, or produced by a single magnetic or electric pole.
2. Biology Having a single fibrous process. Used of a neuron.
3. Medicine Relating to or being a mood disorder that includes depression and not mania or hypomania.

u′ni·po·lar′i·ty (-pō-lăr′ĭ-tē) n.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.


1. Having but one pole; denoting a nerve cell from which the branches project from one side only.
2. Situated at one extremity only of a cell.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012


Having one pole or process as in the case of a nerve cell with one AXON. As applied to an electrode, the term is something of a misnomer. A second electrode is needed to complete the circuit, but this is often attached at a remote point from the point of application of the electrode.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005

Patient discussion about unipolar

Q. Bipolar depression And Unipolar depression Is bipolar depression different from unipolar depression?

A. Yes. These are two different disorders that are distinct in many ways: bipolar appears earlier (20's compared to middle aged), males and females are affected equally (depression is more prevalent among women), family tendency (more pronounced in bipolar) etc. The course is also different: bipolar have manic episodes, while depression includes only depressive episodes.

The treatment is also quite different (lithium and stabilizers for bipolar, SSRI for depression)

You may read more here:

More discussions about unipolar
This content is provided by iMedix and is subject to iMedix Terms. The Questions and Answers are not endorsed or recommended and are made available by patients, not doctors.
References in periodicals archive ?
Bipolar spectrum disorders typically begin earlier in life than unipolar depression.
In an analysis adjusted for time since diagnosis of unipolar depression, the temporal order of prescribed drugs, and other concomitant medications, the use of lithium was associated with a 53% reduction in the risk of readmission, compared with nonuse.
No significant difference was noted in the post-operative bleeding after bipolar and unipolar procedure (p=0.313); showing both procedures to be equally effective.
Figures 4(a)-4(b) show the resistive switching characteristics (in unipolar mode) of this structure.
En el DSM-5 no hay criterios que permitan distinguir el episodio depresivo unipolar del bipolar.
A handful of studies, which are there, have shown that it makes the quality of life poor (20) the literature is sparse in comparing the differences between bipolar depression and unipolar depression with respect to their impact on QOL.
The same group of patients also had a significantly higher proportion of a family history of psychiatric illness (p = 0.01, [phi] = 0.26) and unipolar depressive disorder was more common (p < 0.001, [phi] = 0.59) when compared with the non-anxiety group.
A unipolar world is not in the interest of weaker nations.
MOSKOVA (CyHAN)- The current global events clearly demonstrate that the unipolar model of the world has failed, Russian President Vladimir Putin said Tuesday.
The circuit also permits iron losses measurements with unipolar or bipolar PWM voltage waveforms.