Trisacramentarian :: Trisacramentarian (n.) One who recognizes three sacraments, and no more; -- namely, baptism, the Lord's Supper, and penance. See Sacrament..
Trisagion :: Trisagion (n.) An ancient anthem, -- usually known by its Latin name tersanctus.See Tersanctus..
Trisect :: Trisect (v. t.) To cut or divide into three parts.
Trisect :: Trisect (v. t.) To cut or divide into three equal parts.