rotula /rotˈū-lə/

1. The knee-cap (anatomy)
2. A radial piece of Aristotle's lantern in sea-urchins (zoology)

• radium bomb
• radium bombs
• radium emanation
• radiums
• radius
• radiuses
• radius of curvature
• radius vector
• radius vectors
• radix
• radome
• radomes
• radon
• radons
• rads
• radula
• radulae
• radular
• radulate
• raduliform
• radwaste
• radwastes
• RAEC
• RAeS
• Raetia