Webster’s Revised Unabridged Dictionary · 1913
Gomphosis
Gom·pho′sis (gŏm·fō′sĭs), n. [NL., fr. Gr. γόμφωσις, prop., a bolting together, fr. γομφοῦν to fasten with bolts or nails, γόμφος bolt, nail: cf. F. gomphose.] (Anat.) A form of union or immovable articulation where a hard part is received into the cavity of a bone, as the teeth into the jaws.