trioxide /trī-okˈsīd/ (chem)

A compound with three atoms of oxygen

• underpeeped
• underpeeping
• underpeeps
• under penalty of
• underpeopled
• underperform
• underperformance
• underperformed
• underperforming
• underperforms
• underpin
• underpinned
• underpinning
• underpinnings
• underpins
• under plain cover
• underplant
• underplanted
• underplanting
• underplants
• underplay
• underplayed
• underplaying
• underplays
• underplot