mildew

Any of various fungi or oomycetes that form a superficial, usually whitish growth on plants and various organic materials.

A plant disease caused by such organisms.

A superficial coating or discoloration of organic materials, such as cloth, paper, or leather, caused by fungi, especially under damp conditions.

To affect or become affected with mildew.

To taint with mildew.

To become affected with mildew.

A disease of cucumbers, melons, pumpkins, and similar plants, caused by Plasmopara Cubensis.

A minute parasitic fungus which frequently appears on the leaves, stems, and various other parts of plants or other decaying organic substances as a white frost-like down, or in spots or with various discolorations.

A state of decay produced in living and dead vegetable matter, and in some manufactured products of vegetable matter, such as cloth and paper, by the ravages of very minute parasitical fungi.