baptismal

adjective

relating to a baptism or baptisms

Wiktionary

adj

Etymology: Etymology tree English baptism Proto-Indo-European *h₂el-der.? Proto-Italic *-ālis Latin -ālisbor. Old French -albor. ▲ Latin -ālis Old French -elbor. ▲ Latin -ālisbor. Middle English -al English -al English baptismal From baptism + -al.

Of or relating to baptism.
Of a name, conferred at baptism.
“The neophyte was given a new name in place of the baptismal one, usually of an evil and revolting character, and this was written in blood in the Devil's book, the covers of which were bound in the skin of unbaptised infants.”

noun

A baptismal name: a name given at baptism.
“...Mr. Andrew Theophilus Smith, or some such unlikely pair of baptismals...”
A baptismal font: a large basin used for baptism.
“The baptismal is in the front of the sanctuary.”