Rectangular vs. Cuboid — What's the Difference?

Having the shape of a rectangle.

In geometry, a cuboid is a convex polyhedron bounded by six quadrilateral faces, whose polyhedral graph is the same as that of a cube. While mathematical literature refers to any such polyhedron as a cuboid, other sources use "cuboid" to refer to a shape of this type in which each of the faces is a rectangle (and so each pair of adjacent faces meets in a right angle); this more restrictive type of cuboid is also known as a rectangular cuboid, right cuboid, rectangular box, rectangular hexahedron, right rectangular prism, or rectangular parallelepiped.

Having right angles or a rectangular base, side, or sides

Having the approximate shape of a cube.

Designating a geometric coordinate system with mutually perpendicular axes.

(Anatomy) A tarsal bone on the outer side of the foot in front of the calcaneus and behind the fourth and fifth metatarsal bones.

Having a shape like a rectangle.

(Mathematics) A rectangular parallelepiped.

Having axes that meet each other with right angles.

Of the shape of a cube.

Right-angled; having one or more angles of ninety degrees.

(anatomy) The cuboid bone.

Having four right angles;

(geometry) A parallelepiped having six rectangular faces.

Having a set of mutually perpendicular axes; meeting at right angles;

Cube-shaped, or nearly so; as, the cuboid bone of the foot.

A rectangular parallelepiped

Shaped like a cube