Hexahedra is a geometric term for any six-sided solid shape. There are many synonyms for Hexahedra that are used in different contexts. Cuboid is a synonym that is commonly used in mathematics and engineering. Dice, block, and box are often used in everyday language to describe a Hexahedra object. Other synonyms for Hexahedra include six-faced polygon, rectangular prism, and hexahedral solid. In science, the term polyhedron is used to describe any solid shape with flat faces and edges, including Hexahedra. Overall, these synonyms for Hexahedra offer a range of options for describing any object or shape with six sides.