Definition of: infundibulum

(in′fən·dib′yə·ləm) noun plural ·la (-lə)
1. Anat. a A structure or conduit shaped like a funnel, as that connecting the third ventricle of the brain with the pituitary body, passing through the hypothalamus. b An expanded end of a bronchial tubule or of a ureter, etc.
2. Biol. a A depression on the crown of the head of tapeworms. b The siphon or funnel of a cephalopod. [<L, funnel <infundere pour into. See INFUSE.]
—in′·fun·dib′u·lar, in′fun·dib′u·late adjective