Rubaiyat, ROO by yaht or ROO bee yaht, is the shortened form of The Rubaiyat of Omar Khayyam. This title was given by English writer Edward FitzGerald to his translation of a group of short poems attributed to the Persian poet, astronomer, and mathematician Omar Khayyam. FitzGerald published four editions of the Rubaiyat--in 1859, 1868, 1872, and 1879. He changed the work considerably each time.

