periderm /perˈi-dûrm/

1. The horny cuticular covering of a hydroid colony
2. The cork cambium with the cork and other tissues derived from it, forming a protective outer covering in plants

peridermˈal adjective

• inactivation
• inactivations
• inactive
• inactively
• inactivities
• inactivity
• in actual fact
• inadaptable
• inadaptation
• inadaptations
• inadaptive
• in a daze
• in addition
• in addition to
• inadequacies
• inadequacy
• inadequate
• inadequately
• inadequateness
• inadequatenesses
• inadequates
• inadmissibilities
• inadmissibility
• inadmissible
• inadmissibly