canker sore

• Petite ulcération douloureuse ou lésion apparaissant à l'intérieur de la bouche, sur la langue ou à l'intérieur des lèvres, souvent due au stress, à un traumatisme ou à certains aliments.

A small, painful ulcer or lesion that appears inside the mouth, on the tongue, or on the inner lips, often caused by stress, injury, or certain foods.

1. Small mouth ulcerB1formal

   A small, painful ulcer that appears inside the mouth, on the tongue, or on the inner lips, often caused by stress, injury, or certain foods.

   Aphte

   • I got a canker sore after eating too much citrus fruit.
   • The dentist recommended a special gel to heal the canker sore.
   • Stress often triggers a canker sore for her.