plasma (n.)

  1. the colorless watery fluid of the blood and lymph that contains no cells, but in which the blood cells (erythrocytes, leukocytes, and thrombocytes) are suspended

    [ Syn: plasm , blood plasma ]

  2. a green slightly translucent variety of chalcedony used as a gemstone

  3. (physical chemistry) a fourth state of matter distinct from solid or liquid or gas and present in stars and fusion reactors; a gas becomes a plasma when it is heated until the atoms lose all their electrons, leaving a highly electrified collection of nuclei and free electrons; particles in space exist in the form of a plasma'

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