coel- or coelo- (also N American cel- or celo-) /sēl- or sē-lō-/

Denoting a cavity, or hollow part

• proto-
• Proto
• protoactinium
• protoactiniums
• protoavis
• protoavises
• Protochordata
• protochordate
• protochordates
• protococcal
• Protococcales
• Protococcus
• protocol
• protocolic
• protocolise
• protocolist
• protocolists
• protocolize
• protocolled
• protocolling
• protocols
• protogalaxies
• protogalaxy
• protogine
• protogines