 [ Symptoms ] what is the medical abbreviations ro mean  my husband was diagonosed ro p t s d we know what p t s d stands for but what about ro [ Disease ] that is an easy one i use that term all of the time ro means rule out the doctor is considering a certain diagnosis and may not be sure or currently does not have sufficient data to make a definitive diagnosis so heshe will use the abbreviation ro to indicate that this is a tentative or provisional diagnosis that will be ruled out or not