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.

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uni·po·lar .yü-ni-'pō-lər adj
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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(in neurology) describing a neurone that has one main process extending from the cell body. Compare bipolar.

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uni·po·lar (u″nĭ-poґlər) [uni- + polar] 1. having a single pole or process, as a nerve cell. 2. pertaining to mood disorders in which only depressive episodes occur.

Medical dictionary. 2011.

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Look at other dictionaries:

  • Unipolar — may refer to:* Unipolar depression or unipolar disorder: a state of intense sadness, melancholia or despair that has advanced to the point of being disruptive to an individual s social functioning and/or activities of daily living * Unipolar… …   Wikipedia

  • Unipolar — U ni*po lar, a. [Uni + polar.] 1. (Physics) Having, or acting by means of, one pole only. [1913 Webster] 2. (Anat.) Having but one pole or process; applied to those ganglionic nerve cells which have but one radiating process; opposed to… …   The Collaborative International Dictionary of English

  • unipolar — UNIPOLÁR, Ă, unipolari, e, adj. Care are un singur pol. ♦ (Despre celulele nervoase) Al cărei corp celular are o singură prelungire. – Din fr. unipolaire. Trimis de valeriu, 03.04.2003. Sursa: DEX 98  unipolár adj. m., pl. unipolári; f …   Dicționar Român

  • unipolar — Relativo a las neuronas con un solo polo, como la neurona que consta de axón pero no de dendritas. Diccionario Mosby Medicina, Enfermería y Ciencias de la Salud, Ediciones Hancourt, S.A. 1999 …   Diccionario médico

  • unipolar — 1812, from UNI (Cf. uni ) + POLAR (Cf. polar) …   Etymology dictionary

  • unipolar — adj. 2 g. 1. Que tem um só polo. 2.  [Física] Diz se dos fios de uma pilha que só conduzem uma eletricidade …   Dicionário da Língua Portuguesa

  • unipolar — ► ADJECTIVE ▪ having or relating to a single pole or extremity …   English terms dictionary

  • unipolar — [yo͞on΄əpō′lər] adj. 1. Elec. of or having only one magnetic or electric pole 2. Zool. designating a nerve cell, as in spinal ganglia, having only one process unipolarity [yo͞on΄ə pō′ler′e tē] n …   English World dictionary

  • Unipolar — Als unipolar werden bezeichnet: Elektrotechnik Es treten nur Ladungsträger einer Polarität auf (zum Beispiel Elektronen als bewegliche Ladungsträger in Metallen) Bei Spannungsquellen: Eine Gleichspannungs Quelle mit zwei Anschlüssen, von denen… …   Deutsch Wikipedia

  • unipolar — adjective Date: 1965 relating to, affected with, or being a manic depressive disorder in which there is only a depressive phase < unipolar depression > …   New Collegiate Dictionary

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