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metamour

American  
[met-uh-moor] / ˈmɛt əˌmʊər /

noun

  1. (among polyamorous people) a romantic or sexual partner of one's own romantic or sexual partner.

    I'm not dating her, but she's my boyfriend's girlfriend, so we are metamours.


Etymology

Origin of metamour

First recorded in 1995–2000; meta- ( def. ) + (par)amour ( def. )

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

A "metamour" refers to your partner's partner, and "compersion" refers to a sense of happiness you feel for a partner who is happy with another partner.

From Salon