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Etymology: Gk, kybos, cube, eidos, form
the outer cuboidal tarsal bone on the lateral side of the foot, proximal to the fourth and fifth metatarsal bones. It articulates with the calcaneus, lateral cuneiform, and fourth and fifth metatarsal bones and occasionally with the navicular. Also called os cuboideum.
cu·boid bone(kyū'boyd bōn)
The lateral bone of the distal row of the tarsus, articulating with the calcaneus, lateral cuneiform, navicular (occasionally), and fourth and fifth metatarsal bones.
The outer bone of the instep bones of the foot that articulates posteriorly with the calcaneus and anteriorly with the fourth and fifth metatarsals.
See also: bone