canker sore

noun

Definition of canker sore

  1. :  a painful shallow ulcer of the mouth that has a grayish-white base surrounded by a reddish inflamed area and is of uncertain cause but is not due to the virus causing herpes simplex — compare cold sore

Circa 1596

First Known Use of canker sore

circa 1596


CANKER SORE Defined for English Language Learners

canker sore

noun

Definition of canker sore for English Language Learners

  • : a small painful sore inside the mouth


CANKER SORE Defined for Kids

canker sore

noun can·ker sore \ˈkaŋ-kər-\

Definition of canker sore for Students

  1. :  a small painful sore of the mouth


Medical Dictionary

canker sore

noun

Medical Definition of canker sore

  1. :  a small painful ulcer especially of the mouth; especially :  a painful shallow ulceration of the oral mucous membranes that has a grayish-white base surrounded by a reddish inflamed area and is characteristic of aphthous stomatitis—compare cold sore


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