It stands for: “In medicine, a differential diagnosis (DDX) is the distinguishing of a particular disease or condition from others that present similar clinical features. In medicine, a differential diagnosis is the distinguishing of a particular disease or condition from others that present similar clinical features. ...
What is DX actually means?
dy/dx should not be treated as a fraction if you are talking about the leibniz notation for differentiation. dx basically represents change in x in an integral. It tells you that is the variable that is being integrated. When is dy/dx allowed to be treated as a fraction apposed to an operator?
What does "DX" mean in medicine?
Definition of Dx. Dx: Abbreviation for diagnosis, the determination of the nature of a disease.