octodecimo /ok-tō-desˈi-mō/

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

A book with sheets so folded

• territorially
• territorials
• territorial waters
• territoried
• territories
• territory
• territs
• terroir
• terroirs
• terror
• terrorful
• terrorisation
• terrorisations
• terrorise
• terrorised
• terroriser
• terrorisers
• terrorises
• terrorising
• terrorism
• terrorisms
• terrorist
• terroristic
• terrorists
• terrorization