Retroflex/ˈretrəfleks/ Definition 1 of 3Pro Tip 1/2Physical Descriptions Use 'retroflex' to describe objects or features bent backwards in a physical sense. The plant's leaves displayed a retroflex shape after the storm. Pro Tip 2/2Non-living Objects 'Retroflex' is often used for inanimate objects, not usually for body parts. The retroflex design of the chair provided exceptional support.