noun
Meanings
-
1
noun
a hypothetical galaxy composed predominantly of antimatter rather than ordinary matter
Astronomers have searched for radiation signatures that might reveal a distant antigalaxy.
Thesaurus
Synonyms
1
noun
· a hypothetical galaxy...
antimatter galaxy
Word family
Forms
antigalaxies
Etymology
Formed from anti- + galaxy. Here anti- identifies an antimatter counterpart rather than mere opposition: a galaxy whose stars and gas would be built from antiparticles.