According to the OED, "comestible" as an adjective "appears to have become obs. in Eng. before 1688; but it has been reintroduced, in n. use, From French in 19th c." The adjective citations end at 1683 and the noun citations begin at 1837, so we could possibly conclude that this word dropped out of English for about 150 years. Paul www.wordspy.com