Rio Grande disease

\ ˈrē|(ˌ)ōˈgrand-, -aand-, -dē-, -di- sometimes ˈrī| or |əˈ- \

Definition of Rio Grande disease

: a disease of lettuce of unknown cause first reported from the Rio Grande valley and causing the older leaves to become reddish especially on the tips while the younger central ones blanch and do not grow to normal size

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History and Etymology for Rio Grande disease

from the Rio Grande, river in the southwestern U.S.

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Cite this Entry

“Rio Grande disease.” Dictionary, Merriam-Webster, Accessed 6 Aug. 2020.

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