auto-erotic (adj.)
also autoerotic, 1898, coined by Havelock Ellis from auto- + erotic. Related: Auto-eroticism (1898). The opposite is allo-erotic.
By "auto-erotism" I mean the phenomena of spontaneous sexual emotion generated in the absence of an external stimulus proceeding, directly or indirectly, from another person. [Ellis, "Auto-Erotism," in The Alienist and Neurologist, April 1898]
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