protogalaxy
noun
pro·to·gal·axy ˌprō-tō-ˈga-lək-sē 
: a cloud of gas believed to be the precursor to a galaxy
Word History
First Known Use
1950, in the meaning defined above
- half-bred
- half-breds
- half-breed
- half-breeds
- half-bull
- half-caste
- half-castes
- half-castrate
- half-cell
- half-close
- half-cocked
- half-course
- half-court
- half-cracked
- half-decked
- half-decker
- half-diamond indention
- half-diminished seventh
- half-diminished seventh chord
- half-dollar
- half-evergreen
- half-faced
- half-glasses
- half-hardy
- half-hardy annual