A canker sore is a common form of ulcer or open sore. An ulcer can be on an external surface like the mouth or an internal surface, like the stomach. They are caused by a break in skin or mucus membrane that won't heal.
A solution of continuity in any of the soft parts of the body, discharging purulent matter, found on a surface, especially one of the natural surfaces of the body, and originating generally in a constitutional disorder; a sore discharging pus. It is distinguished from an abscess, which has its beginning, at least, in the depth of the tissues.
Noun
a circumscribed inflammatory and often suppurating lesion on the skin or an internal mucous surface resulting in necrosis of tissue
n.
A solution of continuity in any of the soft parts of the
body, discharging purulent matter, found on a surface, especially one
of the natural surfaces of the body, and originating generally in a
constitutional disorder; a sore discharging pus. It is distinguished
from an abscess, which has its beginning, at least, in the depth of the
tissues.
n.
Fig.: Anything that festers and corrupts like an open sore;
a vice in character.
v. t.
To ulcerate.
Ulcer
Ulcer
A solution of continuity in any of the soft parts of the body, discharging purulent matter, found on a surface, especially one of the natural surfaces of the body, and originating generally in a constitutional disorder; a sore discharging pus. It is distinguished from an abscess, which has its beginning, at least, in the depth of the tissues.
To ulcerate.
Usage Examples
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