triennium/trieʹeni·əm/ noun (pl trienniums triennia /-ni·ə/)

• plaintiff
• plaintive
• plain weave
• plait
• plan
• plan-
• planar
• planarian
• planchet
• planchette
• Planck's constant
• plane
• plane polarization
• planet
• plane table
• planetarium
• planetary
• planetary nebula
• planetesimal
• planetoid
• planform
• plangent
• planimeter
• planish
• planisphere