Orthocenter :: Orthocenter (n.) That point in which the three perpendiculars let fall from the angles of a triangle upon the opposite sides, or the sides produced, mutually intersect..
Overscented :: Overscented (a.) Covered or concealed by a different odor.
Paracentesis :: Paracentesis (n.) The perforation of a cavity of the body with a trocar, aspirator, or other suitable instrument, for the evacuation of effused fluid, pus, or gas; tapping..