predella Syllabification: (pre·del·la)Pronunciation: /priˈdelə/Definition of predella noun 1a step or platform on which an altar is placed. 2a raised shelf above an altar. a painting or sculpture on this, typically forming an appendage to an altarpiece. Origin: mid 19th century: from Italian, literally 'stool'predella in other Oxford dictionaries Definition of predella in the British & World English dictionary