Scaphoid \Scaph"oid\ (?; 277), a. [Gr. ska`fh a boat + -oid: cf. F. scapho["i]de.] (Anat.) Resembling a boat in form; boat-shaped. -- n. The scaphoid bone.
{Scaphoid bone} (a) One of the carpal bones, which articulates with the radius; the radiale. (b) One of the tarsal bones; the navicular bone. See under {Navicular}.
Navicular \Na*vic"u*lar\, a. [L. navicularius, fr. navicula, dim. of navis ship: cf. F. naviculaire.] 1. Of, pertaining to, or resembling, a boat or ship.
2. Shaped like a boat; cymbiform; scaphoid; as, the navicular glumes of most grasses; the navicular bone.
{Navicular bone}. (Anat.) (a) One of the middle bones of the tarsus, corresponding to the centrale; -- called also {scaphoid}. (b) A proximal bone on the radial side of the carpus; the scaphoid.
{Navicular disease} (Far.), a disease affecting the navicular bone, or the adjacent parts, in a horse's foot.