fem. proper name, from French Irène, from Latin Irene, from Greek Eirēnē, literally "peace, time of peace," a word of unknown etymology.
polyethylene terephthalate used as a textile fabric, 1951, proprietary name coined by E.I. du Pont de Nemours & Co.; an invented word of no etymology, on the model of nylon, etc.
from Latinized form of Greek Kronos, youngest of the first generation of Titans, and their leader; a name of uncertain origin but probably not related to Khronos, personification of time, except in folk-etymology.
18c.-19c. West African kingdom, a native name of unknown etymology. Made a French protectorate in 1894, it gained full independence in 1960, and in 1975 changed its name to Benin. Related: Dahoman, Dahomean.