supercloud

Noun

1. A very large cloud of stellar material.
   • There is, however, a significant difference between the contraction of the stars of a cluster from the original gas cloud, and the contraction of whole galaxies from the supercloud that gives rise to a group or...
   • “Regular strings of H II regions and superclouds in spiral galaxies: clues to the origin of cloudy structure.” - 1986, Marcia Bartusiak, Thursday's Universe, Omni Press, Times Books, →ISBN, page 281:
   • The molecular component of the interstellar medium is observed to be fragmented at all scales ranging from that of the supercloud complexes to that of the protostellar cores, forming a hierarchy which is not...