baptismal adjective 2noun 2forms 1 adjective2 •Of or relating to baptism. •Of a name, conferred at baptism. noun2 •A baptismal font: a large basin used for baptism.The baptismal is in the front of the sanctuary. •A baptismal name: a name given at baptism....Mr. Andrew Theophilus Smith, or some such unlikely pair of baptismals... — 1872 formsbaptismals