rotula /rotˈū-lə/

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

• primes
• prime time
• prime-time
• prime times
• primeur
• primeurs
• primeval
• primeval atom
• primevally
• prime vertical
• primigenial
• primigravida
• primigravidae
• primigravidas
• primine
• primines
• priming
• priming-iron
• priming-irons
• priming-powder
• primings
• priming-wire
• primipara
• primiparae
• primiparas