Related Clues:

• Twice penta-
• Word form for ''ten''
• Prefix indicating ten
• Prefix for 'ten'
• Half of icosa-
• Pod opening?
• Ten: Pref.
• Prefix with gon
• It means ''ten''
• Prefix meaning 27-Down
• Ten: Pref
• Ten, for openers?
• Ten up front?
• Octa- + two
• Ten (Pref.)