The crossword solution for the term 'Persephone's Mother' is DEMETER, which is a seven-letter word. DEMETER is the Greek goddess of agriculture, grain, and fertility. She is the daughter of Cronus and Rhea and the mother of Persephone. DEMETER is also known as the goddess of the harvest and is associated with the cycle of life and death. She is often depicted with a cornucopia, a symbol of abundance and nourishment.