Defn: Having three right angles. See Triquadrantal.
TRIREME Tri"reme, n. Etym: [L. triremis; tri- (see Tri-) + remus an oar, akin to E. row. See Row to propel with an oar.] (Class. Antiq.)
Defn: An ancient galley or vessel with tree banks, or tiers, of oars.
TRIRHOMBOIDAL
Tri`rhom*boid"al, a. Etym: [Pref. tri- + rhomboidal.]
Defn: Having three rhombic faces or sides.
TRISACCHARIDE; TRISACCHARID
Tri*sac"cha*ride, n. Also -rid. (Chem.)
Defn: A complex sugar, as raffinose, yielding by hydrolysis three simple sugar molecules.
TRISACRAMENTARIAN
Tri*sac`ra*men*ta"ri*an, n. Etym: [Pref. tri- + sacramentarian.]
(Eccl.)
Defn: One who recognizes three sacraments, and no more; — namely, baptism, the Lord's Supper, and penance. See Sacrament.
TRISAGION
Tris*ag"i*on, n. Etym: [NL., fr. Gr. (Eccl.)