Sexual arousal involving communication on the internet WordNet 3.0 & Open English WordNet

Cybersex, also called computer sex, Internet sex, netsex and, colloquially, cyber or cybering, is a virtual sex encounter in which two or more people have long distance sex via electronic video communication and other electronics connected to a computer network. Wikipedia

Virtual sex encounter Wikidata

A virtual sexual encounter in which two or more persons connected remotely via a computer network send one another sexually explicit messages simulating a sexual experience. Wiktionary

Virtual sexual encounter. Wiktionary (translation)