alpha version, preview version, beta version – Alpha version describes a development status that usually means the first complete version of a program or application, which is most likely unstable, but is useful to show what the product will do to, usually, a selected group—and is also called preview version; the beta version is usually the last version before wide release, often tested by users under real-world conditions. More…
index fossil – One useful for dating and demonstrating the relation between strata in which it is found. More…
putti – Cupids that make themselves useful, as in old paintings; the singular is putto. More…
decorative arts – Any of the arts that create entities that are both useful and beautiful. More…