Skip to definition.
Get the FREE one-click dictionary software for Windows or the iPhone/iPad and Android apps

Noun: plasma  plaz-mu
  1. The colourless watery fluid of the blood and lymph that contains no cells, but in which the blood cells (erythrocytes, leukocytes, and thrombocytes) are suspended
    - 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, 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"

Derived forms: plasmas

Type of: calcedony, chalcedony, ECF, extracellular fluid, state, state of matter

Encyclopedia: Plasma