Wiktionary
thealogy
n. The study of or reflection upon the Goddess from a feminist viewpoint.
Wikipedia
Thealogy
Thealogy (a neologism derived from Ancient Greek meaning "Goddess" and , -logy, meaning "study of") is generally understood as a discourse that reflects upon the meaning of Goddess (thea) in contrast to God (theo). As such, it is the study and reflection upon the feminine divine from a feminist perspective.
Thealogy is distinguished from feminist theology, which is the study of God from a feminist perspective, but the two fields can be seen as related and interdependent.