• (n.) The trapezohedron or tetragonal trisoctahedron; -- so called as being the form of the mineral leucite.
Leu'ci·toid (lū'sĭ*toid) noun [ Leucite + -oid .] (Crystallog.) The trapezohedron or tetragonal trisoctahedron; -- so called as being the form of the mineral leucite.