Definition of white spot
1 : any of several diseases of plants marked by light-colored lesions: such as a : a disease of alfalfa characterized by spotting and yellowing of the foliage and caused by an unbalanced water supply (as from heavy rainfall following a drought) b : heat canker c : a disease of turnips caused by a fungus (Cercosporella brassicae)
2 : ich —usually used in plural
Start your free trial today and get unlimited access to America's largest dictionary, with:
- More than 250,000 words that aren't in our free dictionary
- Expanded definitions, etymologies, and usage notes
- Advanced search features
- Ad free!
Seen and Heard
What made you want to look up white spot? Please tell us where you read or heard it (including the quote, if possible).