Meanings
- colloquialnot comparablePertaining to a committed relationship involving three people, often including a married couple.
And we mus[t]n't forget "Three of Hearts," a feature-length documentary about the nine- year "trinogamous" relationship among bisexual men Sam Cagnina and Steven Margolis and heterosexual woman Samantha Singh.
2006, The Hollywood Reporter, volume 3951 more example
When a man is shot dead on the sidewalk, two women claim to be his wife. Mac, Stella, and dr. hawkes soon discover that the trio were involved in a trinogamous relationship that might not have been as happy as the widows claim.
2013, Donn Cortez, Investigating CSI: Inside the Crime Labs of Las Vegas, Miami and New York, BenBella Books, Inc., →ISBN, page 233
Origin
From tri- + (mo)nogamous. Compare trigamous.
Full word history & related roots →Cite this entry
trinogamous. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/trinogamous
“trinogamous.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/trinogamous. Accessed November 3, 2026.
WatkinsX Dictionary, s.v. “trinogamous,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/trinogamous.
Source: trinogamous on Wiktionary, CC BY-SA 4.0.