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

• coparceners
• coparcenery
• copartner
• copartneries
• copartners
• copartnership
• copartnerships
• copartnery
• copasetic
• copataine
• copatriot
• Copaxone
• co-payment
• COPD
• cope
• copeck
• copecks
• coped
• copemate
• copepod
• Copepoda
• copepods
• coper
• copered
• copering