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

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

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!

History and Etymology for Rio Grande disease

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

Keep scrolling for more

Learn More About Rio Grande disease

Dictionary Entries Near Rio Grande disease

Rio Grande

Rio Grande disease

Rio Grande do Norte

See More Nearby Entries 

Statistics for Rio Grande disease

Cite this Entry

“Rio Grande disease.” Dictionary, Merriam-Webster, Accessed 29 Jul. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon


Test Your Vocabulary

Dog Words Quiz

  • shiba puppy more or less demanding cuddles
  • Which of the following animals has a dog in its etymology?
Name That Thing

Test your visual vocabulary with our 10-question challenge!


Anagram puzzles meet word search.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!