freemium
adj.— «Integrated with IGA’s proprietary SDK, it is the first title in the company’s “freemium category,” offering premium gaming experiences for free thanks to integrated advertising.» —“IGA And ID Team For Free, Web-Based Quake Live” Kotaku Feb. 19, 2008. (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...
Jacuzzi and silhouette are eponyms — that is, they derive from the names of people. An Italian immigrant to California invented the bubbly hot tub called a jacuzzi. And the word silhouette commemorates a penny-pinching treasury secretary who lasted...