Pertaining to the doctrines or tenets of Sabellius. See Sabellian, n.
source: Webster 1913
an extinct Osco-Umbrian language of ancient Italy that survives only in a few inscriptions
source: WordNet 3.0
A follower of Sabellius, a presbyter of Ptolemais in the third century, who maintained that there is but one person in the Godhead, and that the Son and Holy Spirit are only different powers, operations, or offices of the one God the Father.