late blight

Science Dictionary
late blight   (lāt)  Pronunciation Key 
A disease of potato plants caused by the oomycete organism Phytophthora infestans and characterized by decay of the foliage and tubers. An outbreak of late blight led to widespread famine in Ireland in 1845-1850.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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