aphtha

noun
aph·​tha | \ ˈaf-thə, ˈap-thə How to pronounce aphtha (audio) \
variants: also aptha \ ˈap-​ How to pronounce aptha (audio) \
plural aphthae also apthae\ -​ˌthē How to pronounce apthae (audio) \

Medical Definition of aphtha

1 : 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)
2 : 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
3 : a disease (as foot-and-mouth disease) characterized by aphthae

Other Words from aphtha

aphthic \ -​thik How to pronounce aphthic (audio) \ adjective

Learn More about aphtha

Cite this Entry

“Aphtha.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/aphtha. Accessed 30 Nov. 2020.

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