Aprocta :: Aprocta (n. pl.) A group of Turbellaria in which there is no anal aperture.
Choctaws :: Choctaws (n. pl.) A tribe of North American Indians (Southern Appalachian), in early times noted for their pursuit of agriculture, and for living at peace with the white settlers. They are now one of the civilized tribes of the Indian Territory..
Cubo-octahedral :: Cubo-octahedral (a.) Presenting a combination of a cube and an octahedron.
Cubo-octahedron :: Cubo-octahedron (n.) A combination of a cube and octahedron, esp. one in which the octahedral faces meet at the middle of the cubic edges..
Ectoprocta :: Ectoprocta (n. pl.) An order of Bryozoa in which the anus lies outside the circle of tentacles.
Entoprocta :: Entoprocta (n. pl.) A group of Bryozoa in which the anus is within the circle of tentacles. See Pedicellina.
Hexoctahedron :: Hexoctahedron (n.) A solid having forty-eight equal triangular faces.