clear cell [L, clarus + cella, storeroom] , 1. a type of cell found in the parathyroid gland that does not take on a color with the ordinary tissue stains used for microscopic examination. 2. the principal cell of most renal cell carcinomas and occasionally of ovarian and parathyroid tumors. 3. a specific type of epidermal cell, probably of neural origin, that has a dark-staining nucleus but clear cytoplasm with hematoxylin and eosin stain.
