octodecimo /ok-tō-desˈi-mō/

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

A book with sheets so folded

• shuriken
• shurikens
• shush
• shushed
• shushes
• shushing
• shut
• shut away
• shut down
• shutdown
• shutdowns
• shute
• shutes
• shut-eye
• shut-eyes
• shut in
• shut-in
• shut-ins
• shut off
• shut-off
• shut-offs
• shut one's eyes to
• shut out
• shutout
• shut-out bid