orphan disease
n.— «The WHO has termed genetic and orphan diseases (an orphan disease is defined as a condition that affects less than 200,000 people nation-wide) as a major future health challenge.» —“Stress on diagnostic shift” Gulf Times (Doha, Qatar) Apr. 9, 2005. (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...
The adjectives canine and feline refer to dogs and cats. But how does English address other groups of animals? Plus, cabin fever has been around much longer than the current pandemic. That restless, antsy, stir-crazy feeling goes back to the days...