The practise of stimulating oneself sexually(noun)
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Use "autoeroticism" in a sentence
"The sculpture is a display of autoeroticism, but for the artist it also embodies the process of psychoanalysis."
"Morgan pronounced Palin the winner, because, he said, she was a "good" autoeroticism subject."
"It doesn't surprise me that you chide neoclassical economics for engaging in "theoretical autoeroticism" while you have demonstrated a chronic case of theoretical impotence."