| a screen or mat covered with a dark material for shielding a camera lens from excess light or glare. |
| a chattering or flighty, light-headed person. |
psoriasis pso·ri·a·sis (sə-rī'ə-sĭs)
n.
A noncontagious inflammatory skin disease characterized by recurring reddish patches covered with silvery scales.
| psoriasis (sə-rī'ə-sĭs) Pronunciation Key
A chronic, inflammatory skin disease in which recurring reddish patches, often covered with silvery scales, appear especially on the knees, elbow, scalp and trunk. Psoriasis is noncontagious and is inheritable. |