Definition of "ORC"

ORC

proper noun
1. Initialism of Orange River Colony.
2. Acronym of Otago Regional Council.
3. Abbreviation of Oregon City.
noun
countable and uncountable, plural ORCs
1. (astronomy) Acronym of odd radio circle, a very large unexplained astronomical object.
  Quotations
  Even those who never look into the night sky and wonder about stars or galaxies may find the new research interesting, Diamond-Stanic said, because ORCs help to explain how the galaxy we live in came to be.
  2024 January 12, Deirdre Stires, “Those odd circles in space? They’re now explained thanks to scientists including Aleks Diamond-Stanic”, in Bates News‎
2. Initialism of organized retail crime.
3. (biochemistry) Initialism of origin recognition complex.