predellaPronunciation: /prɪˈdɛlə/Definition of predella noun a step or platform on which an altar is placed. a raised shelf above an altar. a painting or sculpture on this, typically forming an appendage to an altarpiece: [as modifier]:four predella panels by BotticelliOrigin: mid 19th century: from Italian, literally 'stool'predella in other Oxford dictionaries Definition of predella in the US English dictionary