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PLASMA

 - 9 dictionary results

plas⋅ma

[plaz-muh]
–noun
1. Anatomy, Physiology. the liquid part of blood or lymph, as distinguished from the suspended elements.
2. Cell Biology. cytoplasm.
3. whey.
4. a green, faintly translucent chalcedony.
5. Physics. a highly ionized gas containing an approximately equal number of positive ions and electrons.
Also, plasm [plaz-uhm] for defs. 1–3.


Origin:
1705–15; < LL < Gk plásma something molded or formed, akin to plássein to form, mold. See plastic


plas⋅mat⋅ic [plaz-mat-ik] , plasmic, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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plas·ma   (plāz'mə)   
n.  
    1. The clear, yellowish fluid portion of blood, lymph, or intramuscular fluid in which cells are suspended. It differs from serum in that it contains fibrin and other soluble clotting elements.

    2. Blood plasma.

  1. Medicine Cell-free, sterilized blood plasma, used in transfusions.

  2. Protoplasm or cytoplasm.

  3. The fluid portion of milk from which the curd has been separated by coagulation; whey.

  4. Physics An electrically neutral, highly ionized gas composed of ions, electrons, and neutral particles. It is a phase of matter distinct from solids, liquids, and normal gases.


[New Latin, from Late Latin, image, figure, from Greek, from plassein, to mold; see pelə-2 in Indo-European roots.]
plas·mat'ic (plāz-māt'ĭk), plas'mic (-mĭk) adj.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Cultural Dictionary

plasma [(plaz-muh)]

A state of matter in which some or all of the electrons have been torn from their parent atoms. The negatively charged electrons and positively charged ions move independently.

Note: Plasmas are usually associated with very high temperatures — most of the sun is a plasma, for example.

plasma [(plaz-muh)]

The liquid part of blood or lymph. Blood plasma is mainly water; it also contains gases, nutrients, and hormones. The red blood cells, white blood cells, and platelets are all suspended in the plasma of the blood.

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Word Origin & History

plasma 
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 base *pele- "flat, to spread" (see plane (1)). Sense of "liquid part of blood" is from 1845; that of "ionized gas" is 1928.
Online Etymology Dictionary, © 2001 Douglas Harper
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Medical Dictionary

Main Entry: plas·ma
Pronunciation: 'plaz-m&
Function: noun
1 a : the fluid part especially of blood, lymph, or milk that is distinguishedfrom suspended material —see BLOOD PLASMA b : the juice that can be expressed from muscle
2 : PROTOPLASM
3 : a mixture of starch and gel used as an ointment base
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

plasma plas·ma (plāz'mə) or plasm (plāz'əm)
n.

  1. The clear, yellowish fluid portion of blood, lymph, or intramuscular fluid in which cells are suspended.

  2. Cell-free, sterilized blood plasma, used in transfusions.

  3. Protoplasm or cytoplasm.


plas·mat'ic (plāz-māt'ĭk) or plas'mic (-mĭk) adj.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Science Dictionary
plasma   (plāz'mə)  Pronunciation Key 
  1. See blood plasma.

  2. Protoplasm or cytoplasm.

  3. One of four main states of matter, similar to a gas, but consisting of positively charged ions with most or all of their detached electrons moving freely about. Plasmas are produced by very high temperatures, as in the Sun and other stars, and also by the ionization resulting from exposure to an electric current, as in a fluorescent light bulb or a neon sign. See more at state of matter.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Computing Dictionary

PLASMA
PLAnner-like System Modelled on Actors. Carl Hewitt, 1975. The first actor language. Originally called Planner-73, and implemented in MacLisp. Lisp-like syntax, but with several kinds of parentheses and brackets.
["A PLASMA Primer", B. Smith et al, AI Lab Working Paper 92, MIT Oct 1975].
["Viewing Control Structures as Patterns of Passing Messages", C. Hewitt, AI Lab Memo 410, MIT 1976].

The Free On-line Dictionary of Computing, © 1993-2007 Denis Howe
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