1. the practice or condition of participating simultaneously in more than one serious romantic or sexual relationship with the knowledge and consent of all partners.

Origin of polyamory

1990–95; poly- + Latin amor love (see amorous) + -y3; patterned after polygamy
Related formspol·y·am·o·rist, nounpol·y·am·o·rous, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for polyamory

Contemporary Examples of polyamory