dissection Syllabification: (dis·sec·tion)Pronunciation: /diˈsekSHən, dī-/Translate dissection | into Italian Definition of dissection noun the action of dissecting a body or plant to study its internal parts:the dissection of animals for scientific research very detailed analysis of a text or idea:this dissection of modern relationshipsdissection in other Oxford dictionaries Definition of dissection in the British & World English dictionary