onychomycosis on·y·cho·my·co·sis (ŏn'ĭ-kō-mī-kō'sĭs)
n.
A fungal infection of the fingernails or toenails that results in thickening, roughness, and splitting of the nails. It is usually caused by Trichophyton rubrum or T. mentagrophytes. Also called tinea unguium.
| a screen or mat covered with a dark material for shielding a camera lens from excess light or glare. |
| a fool or simpleton; ninny. |
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