octodecimo /ok-tō-desˈi-mō/

1. Having eighteen leaves to the sheet
2. Contracted 18mo, often read eighteenmo

A book with sheets so folded

• coulometer
• coulometers
• coulometric
• coulometries
• coulometry
• Coulommiers
• coulter
• coulters
• coulée
• coulées
• coumaric
• coumarilic
• coumarin
• coumarins
• coumarone
• coumarones
• council
• council-board
• council-boards
• council chamber
• council chambers
• council estate
• council estates
• council house
• council houses