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A famous ancient Greek festival celebrated by married women in honor of Demeter as the "mother of beautiful offspring." Though not confined to Attica, it was especially observed in that district.

thes-m[=o]-ph[=o]'ri-a, n.pl. an ancient Greek festival with mysteries, celebrated by married women in honour of Demeter (Ceres) five days about October.

[Gr.] At Athens and elsewhere, the festival of Demeter, surnamed Thesmophoros, or the lawgiver. See Eleusinian Mysteries.