white spot

noun

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

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