[Sab.ba.tar.i.an] n [L sabbatarius, fr. sabbatum sabbath] (1613) 1: one who observes the Sabbath on Saturday in conformity with the letter of the fourth commandment
2: an adherent of Sabbatarianism
[2]Sabbatarian adj (ca. 1631) 1: of or relating to the Sabbath
2: of or relating to the Sabbatarians or Sabbatarianism