Search pari passu pari passu /per″ē pas″o̅o̅/ [L, par, equal, passus, step] , at the same time or in equal proportions. Tweet Telegram VK Random Words partial pressure of oxygen in arterial blood (PaO2) gastrectasia retard pruritic urticarial papules and plaques of pregnancy (PUPPP) off-cycle time maternal and child health (MCH) services Fabrazyme ventriculofallopian tube shunt immunosuppressive