BAP'TIST, noun One who administers baptism. This appellation is appropriately given to John, the forerunner of Christ. 2. As a contraction of Anabaptist, one who denies the doctrine of infant baptism, and maintains that baptism ought to be administered only to adults by immersing the body in water.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI