hymnology, n. [Gr. hymn + -logy: cf. F. hymnologie.].
The hymns or sacred lyrics composed by authors of a particular country or period; as, the hymnology of the eighteenth century; also, the collective body of hymns used by any particular church or religious body; as, the Anglican hymnology. [1913 Webster]
A knowledge of hymns; a treatise on hymns. [1913 Webster]