Literally meaning: “study of a disease”
Origin: Anc Greek
παθο-/patho-(=prefix denoting “suffering”) > πάθος / pathos(=passion, sorrow, strong emotion)
+(-λογία)/-logia(=logy, suffix meaning “study of”, “speech”, “discourse”) > λέω/leo (=speak).
Pathology is the branch of medicine dealing with study and diagnosis of a disease especially with its functional or structural nature.