Search Result for "interplanetary gas":
Wordnet 3.0

NOUN (1)

1. a rarefied flow of gas and charged particles (plasma) that stream from the sun and form the solar wind; 



WordNet (r) 3.0 (2006):

interplanetary gas
    n 1: a rarefied flow of gas and charged particles (plasma) that
         stream from the sun and form the solar wind