The Collaborative International Dictionary of English v.0.48:

Sabian \Sa"bi*an\, a. [L. Sabaeus.] [Written also Sabean, and
   Sabaean.]
   1. Of or pertaining to Saba in Arabia, celebrated for
      producing aromatic plants.

The Collaborative International Dictionary of English v.0.48:

Sabian \Sa"bi*an\, n.
   An adherent of the Sabian religion; a worshiper of the
   heavenly bodies. [Written also Sabaean, and Sabean.]
   [1913 Webster]