geographic tongue

noun

Definition of geographic tongue

: a condition in which the tongue exhibits smooth patches surrounded by slightly elevated grayish margins

called also wandering rash

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History and Etymology for geographic tongue

so called from the resemblance of the patches to land masses on a map

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Cite this Entry

“Geographic tongue.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/geographic%20tongue. Accessed 14 Aug. 2020.

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