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1. The aggregate of cytoplasmic or extranuclear genetic material in an organism.
2. A quantum of collective electron oscillation in a metal, considered as a quasiparticle and analogous to the oscillations of a plasma consisting of stationary positive ions and a gas of electrons.
[German, from New Latin plasma, plasma; see plasma.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Genetics) genetics the sum total of plasmagenes in a cell
[C20: from German, from Greek plasma. See plasma]
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