quintile /kwinˈtīl/

1. Any of four values which divide the items of a frequency distribution into five groups
2. Any of the five groups so formed
3. An aspect of 72º between two heavenly bodies (astrology)

• Group of Five
• Group of Seven
• Group of Ten
• group practice
• group practices
• groups
• group selection
• group sex
• group theory
• group therapy
• groupthink
• group trading
• groupuscule
• groupuscules
• groupware
• groupwares
• group work
• groupwork
• groupy
• grouse
• groused
• grouse-disease
• grouse moor
• grouse moors
• grouser