indumentum /in-dū-menˈtəm/ (biology)

1. A total covering of hair, feathers, etc
2. The underside of rhododendron leaves

• gradient
• gradienter
• gradienters
• gradients
• gradin
• gradine
• gradines
• grading
• gradings
• grading system
• grading systems
• gradini
• gradino
• gradins
• gradiometer
• gradiometers
• grads
• gradual
• gradualism
• gradualisms
• gradualist
• gradualistic
• gradualities
• graduality
• gradually