1. Undergoing slight or no metamorphosis
   - ametabolic

Encyclopedia: Ametabolous

• pith helmet
• pithead
• Pithecanthropus
• Pithecanthropus erectus
• Pithecellobium
• Pithecellobium dulce
• Pithecellodium unguis-cati
• Pithecia
• Pithecolobium
• pithily
• pithiness
• pithy
• pitiable
• pitiably
• pitiful
• pitifully
• pitiless
• pitilessly
• pitilessness
• pitman
• Pitocin
• piton
• Pitot
• Pitot head
• Pitot tube