Refers to epithelial hyperplasia with supporting fibrovascular cores.

The development of multiple papillomas, a benign epithelial neoplasm producing finger-like projections from the epithelial surface

The development of numerous papillomas (papillary tumor); Papillary projections of the epidermis forming a microscopically udulating surface.

Increase in keratinocytes with formation of projections (papillae) from the surface of skin. Eg. Verruca vulgaris,Seborrheic keratosis.