What is "aphtha"

Aphtha \Aph"tha\, n. [Sing. of Aphth[ae].] (Med.)

1. One of the whitish specks called aphth[ae].

2. The disease, also called thrush. [1913 Webster] ||

n. 1 (context pathology English) candidiasis, oral thrush, thrush (gloss: fungal infection of the mucous membranes of the mouth caused by any species of yeast from the genus ''Candida'') 2 An oral ulcer, disregarding the cause. 3 (context veterinary medicine Finnish) foot-and-mouth disease

Aphtha is the name of several diseases or conditions that cause white discoloration to the mouth, including:

• Candidiasis (or "thrush"), a yeast infection of the mouth
• Oral ulcer, an open sore in the mouth
• Aphthous ulcer (or "canker"), an open sore in the mucous membrane of the mouth