ephemera /əˈfem(ə)rə/ I. plural noun 1. things that exist or are used or enjoyed for only a short time. 2. items of collectible memorabilia, typically written or printed ones, that were originally expected to have only short-term usefulness or popularity • Mickey Mouse ephemera. – origin late 16th cent.: plural of ephemeron. Current use has been influenced by plurals such as trivia and memorabilia.
