Medical Definition of SSRISSRI: Selective serotonin reuptake inhibitor, one of a family of antidepressant medications (brand names: Celexa, Luvox, Paxil, Prozac, Zoloft) that affect the neurotransmitter serotonin. Last Editorial Review: 3/19/2012 Back to MedTerms online medical dictionary A-Z List Need help identifying pills and medications? |


