Fausset's Bible Dictionary
One of the seven eunuchs in Ahasuerus' court; akin to the name Bigthan (Esther 1:10; Esther 2:21). Sanskrit, Βagadata , "given by fortune," baga , or the sun. Sun worship prevailed early in Persia.
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Fausset, Andrew R. Entry for 'Abagtha'. Fausset's Bible Dictionary. https://www.studylight.org/dictionaries/eng/fbd/a/abagtha.html. 1949.