Plasma
Plasma Plas"ma, n. [See {Plasm}.] 1. (Min.) A variety of quartz, of a color between grass green and leek green, which is found associated with common chalcedony. It was much esteemed by the ancients for making engraved ornaments. [1913 Webster]

2. (Biol.) The viscous material of an animal or vegetable cell, out of which the various tissues are formed by a process of differentiation; protoplasm. [1913 Webster]

3. Unorganized material; elementary matter. [1913 Webster]

4. (Med.) A mixture of starch and glycerin, used as a substitute for ointments. --U. S. Disp. [1913 Webster]

5. same as {blood plasma}. [PJC]

6. (physics) a state of matter in which charged particles such as electrons and atomi nuclei have sufficiently high energy to move freely, rather than be bound in atoms as in ordinary matter; it has some of the properties of a gas, but is a conductor of electricity.

Note: In a typical plasma, the number of positive and negative particles are approximately equal. Plasmas are found naturally in the atmosphere of stars, and can be created in special laboratory apparatus. [PJC]

{Blood plasma} (Physiol.), the colorless fluid of the blood, in which the red and white blood corpuscles are suspended. It may be obtained by centrifuation of blood to remove the blood cells. It is distinguished from {serum} in that plasma still has the fibrin of blood, and may be clotted, while in serum the fibrin has been removed.

{Muscle plasma} (Physiol.), the fundamental part of muscle fibers, a thick, viscid, albuminous fluid contained within the sarcolemma, which on the death of the muscle coagulates to a semisolid mass. [1913 Webster +PJC]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • plasma — [ plasma ] n. m. • 1845; plasme « calcédoine verte » 1752; mot gr. « chose façonnée » 1 ♦ Plasma sanguin, ou absolt plasma : partie liquide du sang. ⇒ sérum; plasmaphérèse . Plasma lyophilisé. 2 ♦ (1962) État de la matière portée à très haute… …   Encyclopédie Universelle

  • plasma- — ⇒PLASMA , PLASM(O) , (PLASM , PLASMO )élém. formants I. L élém. est ou représente le subst. plasma. A. BIOL., MÉD. [Corresp. à plasma A 1 a] 1. [Le mot constr. est un adj.; le 2e élém. est un suff.] V. plasmatique (dér. s.v. plasma). 2. [Les mots …   Encyclopédie Universelle

  • Plasma — Saltar a navegación, búsqueda El término Plasma puede referirse a los siguientes artículos: Plasma sanguíneo, el componente líquido de la sangre. Plasma seminal, el componente líquido del semen. Plasma, el cuarto estado de la materia y el más… …   Wikipedia Español

  • plasmă — PLÁSMĂ s.f. 1. Parte lichidă a sângelui sau a limfei formată din apă, săruri, protide, lipide, glucide, anticorpi etc. 2. Substanţă gazoasă puternic ionizată, ale cărei proprietăţi fizice sunt determinate de existenţa ionilor şi a electronilor în …   Dicționar Român

  • Plasma — may refer to: * Blood plasma, the yellow colored liquid component of blood, in which blood cells are suspended * Plasma (physics), an ionized gas, the fourth state of matter **Plasma display, a common application of plasma (physics), a flat panel …   Wikipedia

  • Plasma — Sn Blutflüssigkeit; Substanz, in der sich Stoff und Energiewechsel vollzieht per. Wortschatz fach. (19. Jh.) Neoklassische Bildung. Neoklassische Übernahme aus spl. plasma, dieses aus gr. plásma Gebilde zu gr. plássein kneten, bilden, gestalten …   Etymologisches Wörterbuch der deutschen sprache

  • plasma — m. hemat. Fracción líquida de la sangre y de la linfa en la que se encuentran suspendidos los componentes sólidos. Está formado por agua, electrólitos, glucosa, lípidos, proteínas, gases disueltos y bilirrubina. El plasma es fundamental para el… …   Diccionario médico

  • plasma — Element prim de compunere savantă cu semnificaţia (referitor la) plasmă (1), de plasmă (1) . [var. plasmo . / < fr., gr. plasma]. Trimis de LauraGellner, 13.09.2007. Sursa: DN …   Dicționar Român

  • plasma — (n.) 1712, form, shape (earlier plasm, 1620), from L.L. plasma, from Gk. plasma something molded or created, from plassein to mold, originally to spread thin, from PIE *plath yein, from root *pele flat, to spread (see PLANE (Cf. plane) (n …   Etymology dictionary

  • plasma — s. m. 1.  [Fisiologia] Líquido claro onde se encontram os glóbulos do sangue e da linfa (ex.: plasma sanguíneo). 2.  [Física nuclear] Meio gasoso a alta temperatura, em equilíbrio termodinâmico, eletricamente neutro mas condutor da eletricidade,… …   Dicionário da Língua Portuguesa

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