(Ῥαριάς), a surname of Demeter, which she derived from the Rharian plain in the neighbourhood of Eleusis, the principal seat of her worship. (Paus. 1.38.6; Steph. Byz. and Suid. s. v.)
[L.S]A Dictionary of Greek and Roman biography and mythology
Smith, William
A Dictionary of Greek and Roman biography and mythology. William Smith, LLD, ed. 1890