orifice(redirected from Right atrioventricular orifice)
Also found in: Dictionary, Thesaurus, Medical, Wikipedia.
Related to Right atrioventricular orifice: Left atrioventricular orifice, orifice of pulmonary trunk
Opening or window in a side or end wall of a waveguide or cavity resonator through which energy is transmitted.
(science and technology)
An aperture or hole.
A mouth, aperture, opening, perforation, passage, or hole. The size of an orifice normally is fixed.