SABBATARIAN, noun [from sabbath.] One who observes the seventh day of the week as the sabbath, instead of the first. A sect of baptists are called sabbatarians. They maintain that the Jewish sabbath has not been abrogated. SABBATARIAN, adjective Pertaining to those who keep Saturday, or the seventh day of the week, as the sabbath.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI