spadia n. a page wrapped around the spine of a periodical or one of its sections so as to appear as a narrow flap or partial page. Also spadea. Editorial Note: Images of a spadia. The 1993 citation has it right: a gatefold and a spadia are not the same thing. The word is pronounced spay-dee-uh. (source: Double-Tongued Dictionary)
Further reading
Astronauts returning from space say they experience what’s called the overview effect, a new understanding of the fragility of our planet and our need to reflect on what humans all share as a species. A book about the end of the universe...
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...