variants also aptha
plural aphthae also apthae -ˌthē How to pronounce aphtha (audio)
: a speck, flake, or blister on the mucous membranes (as in the mouth or gastrointestinal tract or on the lips) characteristic of some diseases (as thrush)
: one of the vesicles filled with clear serous fluid that occur in the mouth, on the udder, and in the spaces between the digits of cloven-footed animals in some diseases
usually used in plural
: a disease (as foot-and-mouth disease) characterized by aphthae
aphthic adjective

Dictionary Entries Near aphtha

Cite this Entry

“Aphtha.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/aphtha. Accessed 22 Jul. 2024.

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