1. Free-swimming mostly freshwater flatworms; popular in laboratory studies for the ability to regenerate lost parts
   - planaria

Derived forms: planarians

Type of: flatworm, platyhelminth

Part of: class Turbellaria, Turbellaria

Encyclopedia: Planarian

• heel
• heel counter
• heelball
• heelbone
• heeler
• heelless
• heelpost
• heels over head
• heeltap
• Hefa
• heffalump
• heft
• heft up
• heftily
• heftiness
• hefty
• hegari
• Hegel
• Hegelian
• hegemon
• hegemonic
• hegemony
• hegira
• Heidegger
• Heidelberg man