Defn: A solid of the isometric system bounded by twenty-four equal faces, three corresponding to each face of an octahedron. Tetragonal trisoctahedron, a trisoctahedron each face of which is a quadrilateral; called also trapezohedron and icositetrahedron. — Trigonal trisoctahedron, a trisoctahedron each face of which is an isosceles triangle.
TRISPAST; TRISPASTON
Tri"spast, Tri*spas"ton, n. Etym: [NL. trispaston, fr. Gr. Tri-) +
(Mech.)
Defn: A machine with three pulleys which act together for raising great weights. Brande & C.
TRISPERMOUS
Tri*sper"mous, a. Etym: [Pref. tri- + Gr. (Bot.)
Defn: Containing three seeds; three-seeded; as, a trispermous capsule.
TRISPLANCHNIC
Tri*splanch"nic, a. Etym: [Tri- + splanchnic.] (Anat.)
Defn: Of or pertaining to the three great splanchnic cavities, namely, that of the head, the chest, and the abdomen; — applied to the sympathetic nervous system.
TRIST
Trist, v. t. & i. [imp. Triste.]
Defn: To trust. [Obs.] Chaucer.
TRIST
Trist, n. Etym: [See Tryst.]