Word Origin & History
citrus1825, from Mod.L. genus name, from L. citron, name of a tree with lemon-like fruit, the first citrus fruit available in the West. The name, like the tree, is probably of Asiatic origin. But Klein traces it to Gk. kedros "cedar," and writes that the change of dr into tr shows that the word came from Greek
into Latin through the medium of the Etruscans. Citric first recorded 1800.