Home › Words › P › pruvanserinpruvanserinpruvanserin means A selective 5-HT2A receptor antagonist investigated as an insomnia treatment.EtymologyContains -anserin (“serotonin receptor antagonist”).nounA selective 5-HT2A receptor antagonist investigated as an insomnia treatment.Definitions & examples from Wiktionary (CC BY-SA 3.0).