Orifice
[n] an aperture or hole opening into a bodily cavity; "the orifice into the aorta from the lower left chamber of the heart"
Related Information
Related Terms
aperture, broaching, cavity, chasm, check, clearing, cleft, crack, disclosure, fenestra, fistula, fontanel, foramen, gap, gape, gat, gulf, hiatus, hole, hollow, inlet, interval, lacuna, laying open, leak, opening, opening up, outlet, passageway, pore, slo