interplanetary gas

Noun
  1. is a type of: plasma - (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
    is a part of: interplanetary medium - interplanetary space including forms of energy and gas and dust
    substance meronym: solar wind - a stream of protons moving radially from the sun

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