discordant couple
n.— «In the discordant couple phenomenon, one partner is HIV-positive, while the other remains negative, even as they continue to live together as man and wife or simply maintain a long-term relations.» —“Aids Spread Relief” by Big Issue Writer East African Standard (Nairobi, Kenya) July 26, 2004. (source: Double-Tongued Dictionary)
Further reading
What if, instead of being an inanimate object, a dictionary were alive? That’s the idea behind a lavishly illustrated new children’s book called The Dictionary Story (Bookshop|Amazon) by Oliver Jeffers and Sam Winston. This is part of a...
Asthenosphere, a geologist’s term for the molten layer beneath the earth’s crust, sparks a journey that stretches all the way from ancient Greece to the author of Uncle Tom’s Cabin. Plus: What the heck is a dogberg? It’s when...