Patent ductus arteriosus (PDA) is the persistence of an opening that allows the blood to skip circulating through the lungs after a baby is born.
Former Prince Andrew and Sarah Ferguson had a very complicated marriage — and their PDA often made that clear.
Ariana Grande is obsessed with her new boyfriend, Mac Miller.
Everyone has varying opinions on how much PDA is OK.
This is PocketMage, a PDA designed and built for productivity.