'Trisagion' definitions:

Definition of 'Trisagion'

From: GCIDE
  • Trisagion \Tris*ag"i*on\, n. [NL., fr. Gr. ? thrice holy; ? thrice + ? holy.] (Eccl.) An ancient anthem, -- usually known by its Latin name tersanctus.See Tersanctus. [1913 Webster]