The Collaborative International Dictionary of English v.0.48:
Baptist \Bap"tist\ (b[a^]p"t[i^]st), n. [L. baptista, Gr.
1. One who administers baptism; -- specifically applied to
John, the forerunner of Christ. --Milton.
2. One of a denomination of Christians who deny the validity
of infant baptism and of sprinkling, and maintain that
baptism should be administered to believers alone, and
should be by immersion. See Anabaptist.
Note: In doctrine the Baptists of this country [the United
States] are Calvinistic, but with much freedom and
moderation. --Amer. Cyc.
Freewill Baptists, a sect of Baptists who are Arminian in
doctrine, and practice open communion.
Seventh-day Baptists, a sect of Baptists who keep the
seventh day of the week, or Saturday, as the Sabbath. See
Sabbatarian. The Dunkers and Campbellites are also
[1913 Webster] Baptistery