Definition of "autonym"

autonym

noun
plural autonyms
1. (taxonomy) An infraspecific name in which the specific epithet is repeated.
2. (linguistics, anthropology) A name used by a group or category of people to refer to themselves or their language, as opposed to a name given to them by other groups.
3. The true name of a person or other entity, especially an author.
  Quotations
  As a general principle, the heading of the main entry of the book should be in the form in which the book itself is published; that is, if it is published under an autonym let the autonym be given, if under a pseudonym, then let the pseudonym be given, and if the book be anonymous, then let the fact be stated.
  1900, Mr. Barnwell, “Cataloging Roundtable”, in Library Journal, page 157
4. A work published under the author's true name.