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

• quacksalvers
• quacksalving
• quad
• Quad
• quad bike
• quadded
• quadding
• quadr-
• quadragenarian
• quadragenarians
• quadragenary
• Quadragesima
• quadragesimal
• quadrangle
• quadrangles
• quadrangular
• quadrangularly
• quadrans
• quadrant
• quadrantal
• quadrantes
• quadrants
• quadraphonic
• quadraphonics
• quadraphony