1. a member of a Protestant Christian denomination that emphasizes adult baptism by immersion and the autonomy of individual churches
Usage: often capitalized when referring to the denomination or its members
2. a person who baptizes or administers baptism
Usage: archaic or formal usage

Examples

• She is a Baptist and attends church every Sunday.
• The Baptist denomination has millions of followers worldwide.
• Many Baptists believe in believer's baptism rather than infant baptism.
• He was raised in the Baptist faith by his parents.
• The local Baptist church organized a community service project.