- Plant Pathology. a disease of plants, characterized by a cottony, usually whitish coating on the surface of affected parts, caused by any of various fungi.
- any of these fungi.Compare downy mildew, powdery mildew.
- any of similar coatings or discolorations, caused by fungi, as that which appears on fabrics, paper, leather, etc., when exposed to moisture.
- to affect or become affected with mildew.
Origin of mildew
Examples from the Web for mildewed
If they mildewed they would be a dead loss to the merchants handling them.Steve and the Steam Engine
Sara Ware Bassett
Many of the pictures in the gallery were warped and cracked, and mildewed by neglect and damp.Art in England
And all you've got is that mildewed chaperon, snoring there.Ambrotox and Limping Dick
I took these out, and discovered a little dress, musty and mildewed.Field and Forest
"My conscience is mildewed and my temper is blue molded," declared Grace.The Girl Scouts at Sea Crest
- to affect or become affected with mildew
Word Origin and History for mildewed
mid-13c., mildeu "honeydew, nectar," from Old English meledeaw "honeydew" (sticky stuff exuded by aphids), from Proto-Germanic compound of *melith "honey" (see Melissa) + *dawwaz "dew" (see dew). Cf. Old Saxon milidou, Dutch meeldauw, German Meltau "mildew."
First element in many cases assimilated to forms of meal (n.2) "ground grain." As a kind of fungus it is first recorded mid-14c., so called from its being sticky and originally growing in plants. As a verb from 1550s. Related: Mildewed.
- Any of various fungi or oomycete organisms that form a white or grayish coating on surfaces, such as plant leaves, cloth, or leather, especially under damp, warm conditions. Powdery mildews are important plant diseases usually caused by ascomycete fungi, while downy mildews, including a serious disease of grapevines, are caused by oomycetes.