Literally meaning: “underdevelopment”
Origin: Anc Greek
υπό-/hypo- (prefix meaning "under", "beneath", "less", “diminished”)
+πλάσις/plasis(=formation) πλάσσω/plasso(=to create, to form, to mold)
Hypoplasia is the underdevelopment resulting from an abnormal paucity of cells in tissue or organ.