from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun Self-satisfaction of sexual desire, as by masturbation.
- noun The arousal of sexual feeling without an external stimulus.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun Sexual activity involving oneself including
masturbationand autoerotic asphyxiation.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun using you own body as a sexual object
Sorry, no etymologies found.
Female child, entirely made character of in autoerotism and masturbation, 79
 Ellis spoils, however, the sense of his invented term by comprising under the phenomena of autoerotism the whole of hysteria and masturbation in its full extent.
My attention has also been directed to a deficiency in the above-cited statement which for the sake of clearness described any conceivable separation between the two phases of autoerotism and object love as a temporal separation.
Other psychologically important concepts developed by Ellis include autoerotism and narcissism, both of which were later taken on by Sigmund Freud.