trimonthly /trī-munthˈli/

Every three months

• permissibility
• permissible
• permissible dose
• permissible doses
• permissibly
• permission
• permissions
• permissive
• permissively
• permissiveness
• permissivenesses
• permissive temperature
• permissive temperatures
• permit
• permits
• permittance
• permittances
• permitted
• permitter
• permitters
• permitting
• permittivities
• permittivity
• Permo-Carboniferous
• perms