IPA: /ˌɔːtəʊɪˈrəʊtɪzəm/
KK: /ˌɔːtəʊɪˈrɒtɪzəm/
The act of achieving sexual pleasure or satisfaction through one's own actions, often without the involvement of another person.
He explored the concept of autoerotism in his psychology class.
Autoerotism is formed from "auto-" (meaning self) and "erotism" (from Greek "erōs", meaning love or desire). The term describes a state of sexual arousal or pleasure derived from oneself.
Think of 'self' ('auto-') and 'desire' ('erōs') to remember that autoerotism refers to deriving pleasure from oneself.