What is "sabbatarian"

Sabbatarian \Sab`ba*ta"ri*an\, n. [L. Sabbatarius: cf. F. sabbataire. See Sabbath.]

1. One who regards and keeps the seventh day of the week as holy, agreeably to the letter of the fourth commandment in the Decalogue.

   Note: There were Christians in the early church who held this opinion, and certain Christians, esp. the Seventh-day Baptists, hold it now.

2. A strict observer of the Sabbath.

Sabbatarian \Sab`ba*ta"ri*an\, a. Of or pertaining to the Sabbath, or the tenets of Sabbatarians.

1610s, "a Christian unusually strict about Sabbath observation," from Latin Sabbatarius (adj.), from Sabbatum (see Sabbath). Meaning "member of a Christian sect which maintained the Sabbath should be observed on the seventh day" is attested from 1640s; earlier sabbatary (1590s). Related: Sabbatartianism.

a. Of or pertaining to the Sabbath, or the tenets of Sabbatarians. n. 1 A person who regards and keeps the seventh day of the week ("Saturday", the Israelite or Jewish Sabbath) as holy in conformity with the fourth commandment of the Decalogue, such as an Orthodox Jew, Seventh-day Adventist, Seventh Day Baptist, a member of the Church of God (Seventh Day); a Sabbath-keeper, a Saturday-keeper. 2 A person who regards and keeps the first day of the week as holy and often considers it as a replacement for the seventh-day Sabbath, a Sunday-keeper. 3 A person who favors the strict observance of the Sabbath (either the seventh day or first day of the week). 4 A member of a non-Jewish religious sect originating in Russia distinguished by observance of Jewish rites and festivals including Saturday as the day of rest.